| Subjoin (v. t.) To add after something else has been said or written; to ANNEX; as, to subjoin an argument or reason. Thesaurus Entries add, adjoin, affix, agglutinate, annex, append, attach, burden, complicate, conjoin, decorate, encumber, glue on, hitch on, infix, join with, ornament, paste on, plus, postfix, prefix, put with, saddle with, slap on, suffix, superadd, superpose, tack on, tag, tag on, take, unite, unite with |