Sentiogender is a sub-set of genderfluid that describes a gender that changes based on the perception of how others view their gender. This is a gender that activates or alters after interaction with others, after gender-affirmation or gender-refutation, or after the individual believes/is reminded that they are being perceived as a certain gender (even if no one is around.) A sentiogender person may be able to activate their own gender by perceiving themself.
Someone who is sentiogender may fluctuate between pretending to be a certain gender due to other's perception, being in a state of becoming that gender and actually being it. After a certain gender is activated, it may remain for a period of time even after the activation trigger has ceased. A sentiogendered person often has a base/static gender for when they are unperceived or unobserved and may therefore also identify as demifluid.
Others may or may not perceive their gender to be a certain way, but a sentiogendered person's gender is altered based on how that person believes others are viewing their gender. For instance, someone may be viewing a sentiogendered individual as agender but is using the gendered pronouns she/her, and therefore the sentiogendered person would interpret herself to be female (despite the "perceiver" viewing their gender differently in their own head.) Simply put, this gender relates to how someone thinks other people gender them and does not always relate to how someone is being mentally gendered.
This is a xenogender that falls under mutogender and is a type of condigender.
This gender is related to gendered-dynamics, gendered-language used by others, and actions that are perceived to be motivated by gender. A sentiogendered person may have little grasp of their gender identity when unperceived, or they may have a strong sense of identity which is then altered when they are perceived.
History
Sentiogender was coined by lgbta wiki user Nemosexual on the 4th of August, 2021.
Flag
The sentiogender flag is a five-striped flag, coloured black (to represent a static/base gender), green (to represent non-binary and xenogenders), white (to represent genderless/agender experiences), pink (to represent feminine-aligned genders) and blue (to represent masculine-aligned genders). The different colours represent the spectrum of gender fluidity under this gender.