Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

(seclusion) 893; isolation &c (disjunction) 44; unification &c 48. one, unit, ace; individual; none else, no other. V. be one, be alone &c adj.; dine with Duke Humphrey†. isolate &c (disjoin) 44. render one; unite &c (join) 43, (combine) 48. Adj. one, sole, single, solitary, unitary; individual, apart, alone; kithless†. unaccompanied, unattended; solus [Lat.], single-handed; singular, odd, unique, unrepeated†, azygous, first and last; isolated &c (disjoined) 44; insular. monospermous†; unific†, uniflorous†, unifoliate†, unigenital†, uniliteral†, unijocular†, unimodal [Math.], unimodular†. lone, lonely, lonesome; desolate, dreary. insecable†, inseverable†, indiscerptible†; compact, indivisible, atomic, irresolvable†. Adv. singly &c adj.; alone, by itself, per se, only, apart, in the singular number, in the abstract; one by one, one at a time; simply; one and a half, sesqui-†. Phr. natura il fece [It], e poi roppe la stampa [It]; du fort au faible [Fr.]; two souls with but a single thought, two hearts that beat as one.