It's an umbrella term referring to those whose
internal age (or lack) is different from their chronological (or physical) age. This identity is often involuntary and cannot be controlled.
It's important to note that the notion of internal age does not refer to cognitive abilities, behaviors or personality. One can have any intellectual abilities, any personality any behaviors and not be transage.
Internal age is an age that is felt, it's a sentimental age.

Is someone who doesn't experience age incogruence.
The individual is in adequacy with their chronological age.
Cisage is the opposite of transage.

Age incongruence: is the discordance bewteen one's internal age and one's chronological (or physical) age.

Having an alignment with certain age(s) regardless of your actual chrono/intra age; Feeling more in touch with or having connections to certain age(s) without necessarily identifying as said age.

Chronopeculiar, age-incongruent ,altage, agequeer or chronosian: alternative terms for transage.

Misage it's the act of reffering to someone with a word, an age that doesn't correspond to their (intra) age. It can be volountary or accidental.

Intrage, endoage, innerage:
alternative labels for internal age.

Someone who feel their are between 35-60 years old.

An umbrella term describing those who feel their age can be best described through kids, and/or being one.

Transage child:
•It can be a chrono 10 year old who feel they are 5 years old.
•A chrono 6 year old who feel they are 10.
• A chrono 20 year old who feel they are between 8-10 years old.
Etc !

Means having multiple intra-ages , either at the same time or moving between different ages identities at different times. (Biage, triage, polyage, panage,)

Agefluid :
Refers to someone whose (internal) age changes over time. An agefluid individual can feel as any ages or combination of ages at any given time. Their(s) age(s) can change at random or it may vary in response to different circumstances. One's internal age can change over the course of minutes, hours, days, weeks, months, or years.

Age regression:
Is a form of transageness describing the phenomenon when someone reverts to a younger state of mind. This retreat may be only a few years younger than the person’s physical age. It could also be much younger, into early childhood or even infancy.
Age regression is sometimes used in psychology and hypnotherapy. It can also be used as a self-help tool, or something someone does to reduce stress. It's important to remember that transageness is not limited to age regression, and it's (generally) completely unvoluntary. Someone can feel older, multiple ages, feel constantly certain(s) age(s) can be fluid among certains ages, can feel in intensity certain(s) age(s) (ageflux) (etc).it exist a large variety of transage identities/experiences.
The main differences between age regression and transage are:
age regression is generally volountary while transage isn't.In age regression you feel an age in a specific moment while in transage you can always feel certain age(s).-In agere you feel younger than your chrono-age while in transage you can feel older, ageless, fluid, xenoage..
-Agere imply the modification of your age identity into another one (you stop to identify to your chrono-age and start to identify as younger) while in transage you can always feel certain age(s). It's static so your age identity doesn't change (i.e regress or progress).

Is transage identity describing the experiencing of having an absence, a blank space or void where an age might otherwise be.

Includes all forms of discrimination, segregation and contempt based on age.

Transagemisia/transagephobia: fear, hate, aversion and more generally negative perceptions/ discriminations against transage individuals.

A system of thoughts, behaviors and representations who consider all individuals of their assigned date at birth/physical age or percieve transage individuals as inferiors, less legitimate to cisage individuals. Chrononormativity is a system of oppression.

Agepunk or Agefuck:
Is an age identity as well as a declared opposition to ageism. It is an identity that based on a resistance against age norms, transagemisia and oppression and societal status. One’s actual age has nothing to do with being agepunk, and one does not have to self identify as transage to be agepunk.

Umbrella term for transage identities who are best described through how they relate to things, beings, or concepts that most individuals don't think of as having to do with age, such as animals, plants, objects, or concepts.. (Nounage, aesthetiage, neuroage, mutage..).

Tanner classification:
The Tanner scale (also known as the Tanner stages or Sexual Maturity Rating (SMR)) is a scale of physical development in (physical) children, adolescents and adults. The scale defines physical measurements of development based on external primary and secondary sex characteristics, such as the size of the breasts, genitals, testicular volume and development of pubic hair.
There are five stages: Tanner l, Tanner ll, Tanner lll,
Tanner lV, Tanner V.
It can be useful if we want adopt a transage-inclusive language. For example instead of say «they are a child» we can say «they are Tanner ll».
''Physical-child'', "prepubescent individual" can also be used.

OTY: older to younger.

YTO: younger to older.

Chronological age:
Is the time spent since one's date of birth. The way age is counted variate from cultures.

Age counting system:
Is a social and a cultural construct establishing the rules for counting someone's age. For example in Korea "Hanguk-nai" is a system for calculating someone's age. It consists in taking into account the nine months spent by the child in its mother's womb and thus consider that it is one year old from birth. Then, to the new year of the Gregorian calendar (originally the new year of the Chinese calendar) a new year is added to it. Thus some individuals may end up 2 years ahead of their international age
Age & time are also social constructs.

Is a system of tracking dates as a function of time . Such a system was invented by humans to divide and organize time over long periods of time.
The most used calendar in the world is the Gregorian calendar .

Civil age:
Is the age that appears on the civil status.

Physiological age:
The physiological age reflects the physiological or functional state of the individual. This physiological age can correspond to the chronological age of the individual or not.

ADAB: assigned date at birth.

Age dysphoria:
Describes unease, depression, discomfort, anxiety or distress that accompanies the discordance between an individual's internal age and their chronological age and/or the age others percieve as. It's important to note that not all transage individuals experience age dysphoria, and different individuals may feel dysphoria in different amounts, different ways, or towards different parts of the body.
The opposite of age dysphoria is age euphoria.

(Age) body dysphoria:
It's the discomfort with one's body and/or how it functions. Individuals can feel dysphoria about many different things.
Age dysphoria can be confused with gender dysphoria since a lot of the body parts/functions that can potentially cause dysphoria in a transage individual are the same body parts that can cause gender dysphoria in transgender individuals. (Breast, body hair, menstruations, voice, fat distribution, height..)
Individual do not have to be dysphoric about all parts of their body. One may be dysphoric about certain traits but be fine with others. The exact traits that one is dysphoric about may change throughout one's life.

Social dysphoria:
Dysphoria is a discomfort/distress with how one is seen by other individuals. Examples include dysphoria caused by being misaged by strangers, or being called with adult/child/teen (etc) terms.

Age euphoria:
The state of euphoria one feels from being affirmed in their age identity.

Age passing:
Is when an individual is assumed or perceived to be a certain age.

Age presentation or age expression:
Refers to how one’s appearance and behavior is categorized by society in relation to age. While age presentation is often thought of as being an indication of one’s actual age, that is not always the case. For example, an cisage-adult may present younger, a cisage-teenager may present older, or a transage-teen may present in an adultish way. It's important to note that your age presentation do not necessary align with your internal age.
The main difference is that internal age refers to your inner feeling to be a certain age. It is indepedent from age stereotypes and can be combined with any type of age-presentation.

Includes all forms of discrimination, segregation and contempt against ''old'' individuals. Often rooted in ableism.

Gerascophobie: fear, disgust, hate of aging.

The term adultism is used to describe the oppression of youth by adults, and refers to a concept that is considered to have the same "power", the same impact on the lives of those who experience it as racism or sexism.
It is defined as ''behaviors and attitudes based on the assumptions that adults are more capable than young people, and therefore have the right to decide for young people without their consent. Adultism is also considered in psychology to be "a fondness for the attitudes, ideas, beliefs, and actions of adults. Adultism is commonly referred to as a "bias" or "tendency" toward adults. Adultism is commonly used to describe any discrimination against young people and is distinguished from ageism, which is simply prejudice because of age (and not specifically against young people). It often overlaps with ableism.

Adultist attitudes:
Personal feelings, assumptions, and beliefs that influence a person's attitude about youth (it is also called internalized adultism).

Cultural adultism:
Shared attitudes, induced or spread by beliefs and customs, that assume that adults are superior to anyone not identified as such, simply by virtue of the fact that they are not a part of the group.

Adult supremacism:
is an ageist and ableist ideology, based on the idea of the superiority of adults.

Refers to a social and political system where power is exercised by the oldest people in society.

Anti-aging medicine:
Is a branch of medicine combining the knowledge of nutrition, micronutrition, hormonology and the techniques of aesthetic medicine (not to be confused with cosmetic surgery) and aiming to reduce the risks of premature aging, both psychically, physically and aesthetically.

Also known as vocal cord surgery, is a procedure that combats age-related changes by tightening the vocal cords. It's like a facelift, but for your voice.

Facial aging surgery (FAS) :
Is a surgery procedure aimed at aging the facial features. Someone may need this procedure in order to alleviate age dysphoria.

Facial rejuvenation surgery (FRS) :
Is a surgery procedure aimed at rejuvenating the facial features. Someone may need this procedure in order to alleviate age dysphoria.

Surgical removal of the breasts. Some transage individuals may need this procedure in order to alleviate age dysphoria.

Laser hair removal - electrolysis:
The process of hair removal by exposure, using laser light pulses that destroy the hair follicle. The follicle must contain melanin for the light to be transformed into heat.