Is it ensure, insure, or assure?
toothed cutting tool, Old English sagu, from Proto-Germanic *sago "a cutting tool" (cf. Old English seax "knife," Old Norse sög, Norwegian sag, Danish sav, Swedish såg, Middle Dutch saghe, Dutch zaag, Old High German saga, German Säge "saw"), from PIE root *sek- "to cut" (cf. Latin secare "to cut," Russian sech' "to cut;" see section (n.)).
"proverb, saying, maxim," Old English sagu "saying, discourse, speech, study, tradition, tale," from Proto-Germanic *saga-, *sagon- (cf. Middle Low German, Middle Dutch sage, zage, German Sage "legend, fable, saga, myth, tradition," Old Norse saga "story, tale, saga"), from PIE root *sek(w)- "to say, utter" (see say (v.)).
past tense of see; from Old English plural sawon.
[1940s+; fr the sound of snoring]