English
man-rate
From man + rate.
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-Indo-European *h₂reh₁- ‘to think’
…
Latin prō ratā parte ‘according to a fixed part’
Medieval Latin rata
Old French rate
Middle English rate
English rate
Today it means
verb To certify as safe for a human crew to operate.
Language periods are conventional ranges, not dates for this word.
Etymograph / man-rate