1. (n.) Mental apprehension of whatever may be known or imagined; an idea; a conception; more properly, a general or universal conception, as distinguishable or definable by marks or notes.

2. (n.) A sentiment; an opinion.

3. (n.) Sense; mind.

4. (n.) An invention; an ingenious device; a knickknack; as, Yankee notions.

5. (n.) Inclination; intention; disposition; as, I have a notion to do it.

apprehension assumption attitude automatic response bare suggestion bee blind impulse boutade brain wave brainstorm capriccio caprice climate of opinion clue common belief community sentiment conceit concept conception conclusion consensus gentium consideration crank craze crazy idea crotchet cue drive estimate estimation ethos eye fad fancy fantastic notion fantasy feeling flash fleeting impulse flimflam fool notion freak freakish inspiration general belief general idea gut response half an idea harebrained idea hazy idea hint humor idea image imago impression impulse inclination indication inkling inspiration instinct intellection intellectual object intimation involuntary impulse judgment kink lights maggot megrim memory-trace mental image mental impression mental picture mere notion mind mystique natural impulse observation opinion passing fancy perception personal judgment point of view popular belief position posture presumption prevailing belief public belief public opinion quick hunch quirk reaction recept reflection reflex representation sentiment sight sneaking suspicion stance sudden thought suggestion supposition suspicion telltale theory thinking thought toy urge vagary vague idea view way of thinking whim whim-wham whimsy wind