Odd Notion is a term used to describe an idea or behavior that is strange, unusual, or unexpected. The crossword solutions for this term are WHIM (4 letters), KINK (4 letters), and FREAK (5 letters). WHIM is an unpredictable or sudden desire or change of mind, KINK is an unconventional sexual taste or behavior, and FREAK is an eccentric or unusual person. All three words can be used to describe an Odd Notion.