English
infrafamily
From infra- + family.
Proto-Indo-European *bʰer- ‘to bear, carry’
…
Proto-Italic *ferō ‘to carry, bear’
Latin ferō ‘to bear’
Latin īnferō ‘to carry, bring, put, place, or throw in,…’
Latin īnfrā ‘below’
English infra-
Proto-Indo-European *dʰeh₁- ‘to do, put, place’
Proto-Italic *fameliā ‘household’
Latin familia ‘household’
Middle English famylye
English family
Today it means
noun A rank below subfamily
Language periods are conventional ranges, not dates for this word.
Etymograph / infrafamily