underface (English) comes from English under, from Middle English under, from Old English under, from Proto-Germanic under, from Proto-Indo-European h₁entér, from Proto-Indo-European h₁en — in; in, inside.
underface (English): The underside or downward facing surface of an...
Definitions
The underside or downward facing surface of an...
Ancestry of “underface”, step by step
underface traces back through two separate lines of ancestry.