/ ˌʌnˈʃʊə(r); -ˈʃɔː(r); NAmE -ˈʃʊr/ adjective [ not before noun ]
1.
unsure about / of sth | unsure (as to) whether, how, what, etc. not certain of sth; having doubts :
There were a lot of things I was unsure about.
He was unsure of what to do next.
I was unsure how to reply to this question.
They were unsure as to what the next move should be.
2.
unsure (of yourself) lacking confidence in yourself :
Like many women, deep down she was unsure of herself.
OPP sure