sub-

Forms

• sub-
• suc- — Used before c in Latin.
• suf- — Used before f in Latin.
• sug- — Used before g in Latin.
• sum- — Used before m in Latin.
• sup- — Used before p in Latin.
• sur- — Used before r in Latin.
• su- — Used before s in some Latin compounds.
• sus- — A historical Latin variant associated with the longer form subs-.

Origin

Reconstructed Proto-Indo-European *upo, ‘under; up from below.’

Note

An upward action can start underneath something, so ‘under’ and ‘up’ need not conflict.