Touched lightly causing laughter and wriggling; pleased or amused, as in 'tickled pink.'
From Middle English 'tichelen,' possibly from a Scandinavian root similar to Old Norse 'kitra' (to tickle). The word has meant both the physical sensation and amusement since the 1300s.
Tickling triggers an involuntary response in most animals—even rats laugh when tickled—but humans are unique in finding self-tickling impossible, which is mind-bending!
Complete word intelligence in one call. Free tier — 50 lookups/day.