Unlike quantities (Math.), quantities expressed by letters which are different or of different powers, as a, b, c, a2, a3, xn, and the like. -- Unlike signs (Math.), the signs plus (+) and minus (-).

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OXFORD DICTIONARY

unlike, adj. & prep.
--adj.
1 not like; different from (is unlike both his parents).
2 uncharacteristic of (such behaviour is unlike him).
3 dissimilar, different.
--prep. differently from (acts quite unlike anyone else).

Idiom

unlike signs Math. plus and minus.

Derivative

unlikeness n.

Etymology

perh. f. ON {uacute}l{iacute}kr, OE ungelic: see LIKE(1)

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THESAURUS

unlike

assorted, at odds, at variance, atypical, contrary, contrasted, contrasting, counter, departing, deviating, deviative, different, differentiated, differing, disaccordant, disagreeing, discordant, discrepant, discrete, discriminated, disjoined, disparate, dissimilar, dissonant, distant, distinct, distinguished, divergent, diverging, divers, diverse, diversified, hardly like, heterogeneous, in contrast with, in disagreement, inaccordant, incommensurable, incomparable, incompatible, incongruous, inconsistent, inconsonant, inharmonious, irreconcilable, many, motley, multifarious, nonuniform, odd, of different orders, off, offbeat, opposite to, out, poles apart, poles asunder, scarcely like, separate, separated, several, unalike, uncharacteristic, unconformable, unequal, unequal to, unidentical, unmatched, unresembling, unsame, unsimilar, untypical, variant, varied, variegated, various, varying, widely apart, worlds apart

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ROGET THESAURUS

unlike

Dissimilarity

N dissimilarity, dissimilaritude, unlikeness, diversity, disparity, dissemblance, divergence, variation, difference, novelty, originality, creativeness, oogamy, dissimilar, unlike, disparate, divergent, of a different kind, unmatched, unique, new, novel, unprecedented, original, nothing of the kind, no such thing, quite another thing, far from it, cast in a different mold, tertium quid, as like a dock as a daisy, very like a whale, as different as chalk from cheese, as different as Macedon and Monmouth, lucus a non lucendo, diversified, otherwise, diis aliter visum, no more like my father than I to Hercules.

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