The most common and most likely answer to this crossword clue is the 6 letter word GENDER
I've seen this crossword clue in Financial Times
G
E
N
D
E
R
More clues leading to the result GENDER
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The straight part
We know that "Man or woman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case man or woman = gender.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GENDER mean?
GENDER noun- Class; kind.
- (grammar) A division of nouns and pronouns (and sometimes of other parts of speech) into masculine or feminine, and sometimes other categories like neuter or common, and animate or inanimate.
- (now sometimes proscribed) Sex (a category such as "male" or "female" into which sexually-reproducing organisms are divided on the basis of their reproductive roles in their species).
- Identification as a man, a woman or something else, and association with a (social) role or set of behavioral and cultural traits, clothing, etc; a category to which a person belongs on this basis. (Compare gender role, gender identity.)
- (hardware) The quality which distinguishes connectors, which may be male (fitting into another connector) and female (having another connector fit into it), or genderless/androgynous (capable of fitting together with another connector of the same type).
- To assign a gender to (a person); to perceive as having a gender; to address using terms (pronouns, nouns, adjectives...) that express a certain gender.
- To perceive (a thing) as having characteristics associated with a certain gender, or as having been authored by someone of a certain gender.
- Sound uttered by the mouth, especially by human beings in speech or song; sound thus uttered considered as possessing some special quality or character
- Sound made through vibration of the vocal cords; sonant, or intonated, utterance; tone; — distinguished from mere breath sound as heard in whispering and voiceless consonants.
- The tone or sound emitted by an object
- The faculty or power of utterance
- That which is communicated; message; meaning.
- An expressed opinion, choice, will, desire, or wish; the right or ability to make such expression or to have it considered
- Command; precept.
- One who speaks; a speaker.
- A particular style or way of writing that expresses a certain tone or feeling.
- (grammar) A particular way of inflecting or conjugating verbs, or a particular form of a verb, by means of which is indicated the relation of the subject of the verb to the action which the verb expresses.
- In harmony, an independent vocal or instrumental part in a piece of composition.
- (IRC) A flag associated with a user on a channel, determining whether or not they can send messages to the channel.
- To engender.
- To breed.