| Coextend (v. t.) To extend through the same space or time with another; to extend to the same degree. Thesaurus Entries accompany, agree, be in phase, be in time, be parallel, coexist, coincide, concur, contemporize, equal, go alongside, go beside, isochronize, keep in step, keep pace with, match, parallel, run abreast, run parallel, synchronize, time |