| Subtend (v. t.) To extend under, or be opposed to; as, the line of a triangle which subtends the right angle; the chord subtends an arc. Thesaurus Entries bump heads, confront, contend, contrapose, contraposit, contrast, counteract, face, front, lie opposite, match, meet head-on, oppose, polarize, pose against, put in opposition, set over against, stand opposed, stand opposite |