unpredictable

adj. unforeseeable, uncertain, not predictable

Unpredictable is Jamie Foxx's second studio release. It sold over 598,000 copies in its first week of release, the last week of December 2005, however was kept out of the #1 position by Mary J. Blige, whose album The Breakthrough sold 730,000 copies.After debuting in its first week at No. 2, the record rose to the top of the Billboard 200. This achievement also made Foxx the fourth artist ever to have won an Academy Award for acting and to make a No. 1 album on the Billboard charts. The album charted in the UK upon its 2006 release there.Four singles were released from the album, the title-track "Unpredictable", "DJ Play A Love Song", "Can I Take You Home" and "Extravaganza". The album has sold over 2 million units and is certified 2x Platinum.
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Adjective
1. impossible to foretell
(antonym) predictable
(similar) aleatory
(see-also) uncertain
2. unknown in advance; "an unpredictable (or indeterminable) future"
(similar) indeterminable, undeterminable
3. not occurring at expected times
(synonym) irregular
(similar) sporadic

xin1 huai4 po3 ce4
Evil and unpredictable intentions.
To have sinister intentions. Said of someone that is harbouring evil designs. Compare with 包藏祸心 (bao1 cang2 huo4 xin1).

Synonyms and related words:
accidental, adrift, adventitious, afloat, agnostic, aleatory, alternating, ambiguous, amorphous, capricious, casual, causeless, chance, chancy, changeable, changeful, contingent, coquettish, destinal, desultory, deviable, dicey, dizzy, doubtful, doubting, dubious, eccentric, equivocal, erratic, extraordinary, faddish, fast and loose, fatal, fatidic, fickle, fitful, flickering, flighty, flirtatious, flitting, fluctuant, fluctuating, fluky, fortuitous, freakish, giddy, hesitant, hesitating, iffy, impetuous, improbable, impulsive, incalculable, incidental, inconsistent, inconstant, indecisive, indemonstrable, indeterminate, infirm, insecure, irregular, irresolute, irresponsible, light, mazy, mercurial, moody, more than expected, out-of-the-way, past expectation, polysemous, quicksilver, rambling, restless, risky, rocky, roving, scatterbrained, shaky, shapeless, shifting, shifty, shuffling, skeptical, skittish, spasmodic, spineless, sudden, tottery, touch-and-go, toying, treacherous, unaccountable, unannounced, unanticipated, uncaused, uncertain, unconfirmable, uncontrolled, unconvinced, undependable, undetermined, undisciplined, undivinable, undivined, unexpected, unfixed, unforeseeable, unforeseen, unguessed, unhealthy, unheralded, unhoped for, unlooked-for, unpersuaded, unpredicted, unprepared for, unprovable, unreliable, unrestrained, unsafe, unsettled, unsound, unstable, unstable as water, unstaid, unsteadfast, unsteady, unsure, untrustworthy, unverifiable, vacillating, vagrant, variable, versatile, vicissitudinary, vicissitudinous, volatile, wandering, wanton, wavering, wavery, wavy, wayward, whimsical, wishy-washy, without warning