Related Clues:

• '___ not'
• Be skeptical about
• Be more than concerned about
• Not a done deal
• Rhyme or reason
• Dubious
• Agoraphobia, e.g.
• Not at all certain
• Of ill repute
• Have a premonition of
• Partner of trembling
• Not very likely
• Hunch
• Be aware of
• One of five faculties, six for some