vagueness

adjective vaguer va′·guer, vaguest va′·guest

1. not clearly, precisely, or definitely expressed or stated
2. indefinite in shape, form, or character; hazily or indistinctly seen or sensed
3. not sharp, certain, or precise in thought, feeling, or expression vague in his answers, a vague hope
4. not precisely determined or known; uncertain

Etymology: Fr < L vagus, wandering < IE *wag-, to be bent, prob. < base *wā- > vacillate