adj.
1 not confident
VERBS
▪ be , feel , look , seem , sound
▪ become
▪ leave sb
▪
His research into the incident has left him ~ as to exactly where responsibility lay.
▪ make sb
ADVERB
▪ deeply ( esp. BrE ), very
▪
I feel deeply ~ about the future.
▪ rather , somewhat
▪ a little , slightly , etc.
PREPOSITION
▪ about , as to
▪
He seemed strangely ~ as to how to continue.
▪ of
▪
We were rather ~ of the direction it came from.
2 not known exactly
VERBS
▪ be , look
▪ become
▪ remain , seem
▪ make sth
▪
immigration policies that made employment status ~
ADVERB
▪ extremely , fairly , very , etc.
▪ highly
▪
Cost estimates are highly ~ in this business.
▪ increasingly
▪ still
▪
Whether diet is an important factor in this illness is still ~.
▪ inherently
▪
The world is inherently ~.
Uncertain is used with these nouns: ↑ environment , ↑ fate , ↑ future , ↑ nature , ↑ outlook , ↑ start , ↑ weather