Synonymous

(a.) Having the character of a synonym; expressing the same thing; conveying the same, or approximately the same, idea.

Thesaurus Entries

all one, all the same, analogous, answering, balanced, coextensive, coincident, coincidental, coinciding, compeer, complemental, complementary, congruent, convertible, coordinate, correspondent, corresponding, coterminous, counterpart, ditto, equal, equilateral, equiparant, equipollent, equivalent, eurythmic, even, fellow, finished, harmonious, homologous, identical, like, match, mate, much the same, opposite number, parallel, peer, proportioned, reciprocal, reciprocative, regular, rival, symmetric, synonymous, tantamount, twin, uniform, well-balanced, well-set, well-set-up