adjective
I have only a vague recollection of our having met. She must have had a vague idea of your intentions. Leon could almost make out the vague shape of an approaching figure
For security reasons, her time of arrival was left vague
There had been a vague threat of kidnapping, which should not have been ignored
I had a vague sensation of being followed
Leonore is vague about her plans to run for re-election
By their vague expressions I could see they hadn't understood a word