Etymograph

English

man up

From man + up, with influence from own up, buck up.

Formed from man + up

Proto-Germanic *mann- ‘human being, person, man’

Proto-West Germanic *mann ‘person’

Old English mann ‘human being, person, man’

Middle English man

English man

Proto-Germanic *upp ‘up’

Proto-West Germanic *upp

Old English upp

Middle English up ‘to a vertical axis’

English up

Today it means

verb To be brave or tough enough to deal with something in a manner that is considered strong or manly. (Compare man (“brace oneself, steel oneself”))

Language periods are conventional ranges, not dates for this word.

Etymograph / man up