(a.) Bordering; conterminous; -- followed by with.

accompanying adjacent adjoining agreeing bordering coequal coetaneous coeternal coeval coexistent coexisting coextensive coincident coincidental coinciding coinstantaneous collateral concomitant concurrent congruent connecting contemporaneous contemporary conterminous contiguous correspondent corresponding end to end endways endwise equal equivalent face to face immediate isochronal isochronous joined juxtaposed juxtapositional juxtapositive neighbor neighboring next simultaneous synonymous unison unisonous