出典:Wiktionary
First attested in the 1610s. Probably from Middle English *titeren, *titren (attested in Middle English titering (“hesitation, vacillation”)), probably a frequentative of Middle English titten (“to waver”), related to Old Norse titra (“to shake, shiver, quiver”), dialectal Swedish tittra (“to snicker”).[1][2]
titter (三人称単数 現在形 titters, 現在分詞 tittering, 過去形および過去分詞形 tittered)
トートグ
tautogs
テグー
tejus
tetras
a plaything with which one trifles for pleasure
a wrinkle
あご
ふた
ぐぐれ