SG Heritage Dictionary

Doublets [Noun] Webster's Dictionary 1828

1. A game on dice within tables.

2. The same number on both dice.

3. A double meaning.

Doublets [Noun plural] Webster's Dictionary 1913

See Doublet, 6 and 7.

Duality Roget’s Thesaurus §89

N. duality, dualism, duplicity, biplicity, biformity, polarity, two, deuce, couple, duet, brace, pair, cheeks, twins, castor and pollux, gemini, siamese twins, fellows, yoke, conjugation, dispermy, doublets, dyad, span

V. pair, couple, bracket, yoke, conduplicate, mate, span

Adj. two, twin, dual, dualistic, double, binary, binomial, twin, biparous, dyadic, conduplicate, duplex, biduous, binate, diphyletic, dispermic, unijugate, tete-a-tete, coupled, conjugate, both, both the one and the other