AMAB

'AMAB' is an abbreviation of the English term 'Assigned Male at Birth' — registered as male at birth. The term comes from American activist language and is mainly used to refer to a person without confusing their current lived gender with their sex at birth.

What does it mean?

AMAB refers to the fact that someone was identified and registered as male at birth. In practice, this coincides with biological maleness in more than 99.9% of cases (XY chromosomes, testes, male sexual anatomy). The term is mainly used in trans and non-binary contexts, where a person's lived gender may differ from the sex recorded at birth.

Distinction and overlap

The counterpart is AFAB (Assigned Female at Birth). An AMAB person may currently identify as a man, transfeminine, non-binary or otherwise — the label says something about the past (birth registration), not the present.

Social and practical context

AMAB is used in self-descriptions, healthcare settings and research. In medical and biological contexts, sex at birth remains relevant — chromosomes and anatomy at birth are the basis for screening, medication dosage and surgical policy, not experienced gender.

Critical perspectives

The term 'assigned' is ideologically charged: it suggests that sex at birth is a social choice. In reality, for the vast majority, it is a factual determination — not an 'assignment' but an observation. In the rare intersex conditions, registration can sometimes be less clear-cut, but this is an exception, not the norm. The claim that sex is a spectrum is examined at genderideologie.nl. Critical authors therefore prefer terms such as 'male' or 'boy' over 'AMAB' when referring to biology. Media sociologist Peter Vasterman describes this conflict in the conflict between sex and gender.