01 a. Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely.
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1.
Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely.
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2.
Not holding out a prospect of success; likely to fail; unpromising; as, unlikely means.
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3.
Not such as to inspire liking; unattractive; disagreeable.[Obs.]