SYNONYMS
idea, vague idea, notion, glimmering
sense, impression, suggestion, indication, whisper, suspicion, sneaking suspicion, fancy, hunch
knowledge, slight knowledge
hint, clue, intimation, sign, pointer, insinuation, innuendo
British informal the faintest, the foggiest, the faintest idea, the faintest notion, the foggiest idea, the foggiest notion