Synonyms and related words :
accessory, accompanying, affinitive, agnate, akin, allied, analogical, analogous, appertaining, associated, associative, attendant, attending, cognate, coincident, collatable, collateral, combined, commensurable, commensurate, comparable, comparative, concomitant, concurrent, congeneric, congenerous, congenial, conjoint, connate, connatural, connected, connective, conspecific, corelated, corelational, corelative, correlated, correlational, coupled, en rapport, enate, fellow, joined, joint, linking, matchable, much at one, mutual, paired, parallel, pertaining, pertinent, proportionable, proportional, proportionate, referable, referring, relating, relational, relative, similar, simultaneous, sympathetic, twin,