notion
I
noun
abstraction, apprehension, belief, caprice, concept, conception, conviction, desire, estimation, fancy, feeling, humor, idea, impression, inclination, inkling, judgment, mental image, notio, opinion, sentiment, suggestion, supposition, suspicio, thought, understanding, vagary, view, whim
II
index
apprehension (perception), assumption (supposition), concept, idea, impression, opinion (belief), perception, sense (feeling), suspicion (uncertainty)
Burton's Legal Thesaurus.
William C. Burton.
2006