Synonyms for Twin:
double-faced, twinned, double, twice, two, bifurcated, bilateral, dual, two-sided, dualistic, two-faced, second, dyadic, bi-form, binary, duplex, duplicate, duple, two-fold, paired, double-barreled.
•duplicate, similar (adjective)
coupled, parallel, matched, double, identical, matching, corresponding, like, binary, Duplicating, second, accompanying, twofold, copied, dual, paired, same.
indistinguishable, Duplicating, duplicate, same, fellow, alike, copied, coupled, equivalent, interchangeable, accompanying, identical, twofold.
close, Resembling, akin, ersatz, such, like, semblance, similar, alike, comparable, imitative, analogous, uniform.
n.intimate, inseparable, related, fellow, allied, companion, interrelated, connected, interdependent, synonymous, involved, corresponding. bairn, baby, foundling, bundle of joy, babe, babe in arms, designer baby, blue baby, infant, feeder. friendly, friend, intergovernmental, the global village, exchange, multination, the international community, friendship, international relations, multinational. •duplication (noun)
analog, alikeness, sameness, analogy, similarity, match, resemblance, closeness, similitude, likeness, imitation.
•something exactly like another (noun)
counterpart, duplicate, likeness, match, companion, mate.
gemini, pair, matched, twinned, matching, similitude, siamese, match, counterpart, similar, parallel, duplicate, twin falls, mate, couple.