unlikely

adjective

Pronunciation: /ʌnˈlaɪkli/

Etymology: From Middle English unlykely, unlikly, unlykly, unlicli, equivalent to un- + likely.

Not likely; improbable; not to be reasonably expected.
“It is pretty unlikely that you'll win, but I will pray that at least you do well.”
“In the highly unlikely event of landing in water, lifejackets are stored under the seat.”
Not holding out a prospect of success; likely to fail; unpromising.
“unlikely means”

Etymology: From Middle English unlykely, unlikly, unlykly, unlicli, equivalent to un- + likely.

Etymology: From Middle English unlykely, unlikly, unlykly, unlicli, equivalent to un- + likely.

Something or somebody considered unlikely.
“The molecular ion candidates are divided by the testing phase into three categories: rejects, unlikelies, and probables. Differences between each candidate and the prominent peaks in the spectrum are computed.”
“"Here is my every possible phone number, plus a few unlikelies. And I've also put down the numbers of Karin and Wade, in case you've lost them. Karin can come anytime; Wade, up until six in the morning."”