tee-heePronunciation: /tiːˈhiː/Definition of tee-hee noun a giggle or titter, especially a derisive one: [as exclamation]:They won’t mind what I get up to. Tee-hee! verb (tee-hees, tee-heeing, tee-heed) [no object] titter or giggle, especially derisively: she tee-heed and swatted him with her fan they were tee-heeing over the presents you’d boughtOrigin: Middle English (as a verb): imitativetee-hee in other Oxford dictionaries Definition of tee-hee in the US English dictionary