A tautophrase is a phrase or sentence that repeats an idea in the same words. The name was coined by William Safire in The New York Times.
Examples include:
"A man's gotta do what a man's gotta do" (John Wayne)"It ain't over 'till it's over" (Yogi Berra)"What's done is done." (Shakespeare's Macbeth)"I am that I am." (God, Exodus 3:14)"Tomorrow is tomorrow" (Antigone (Sophocles))"A rose is a rose is a rose." (Gertrude Stein)"Sometimes a cigar is just a cigar." (Sigmund Freud)"I yam what I yam and that's all that I yam!" (Popeye)"Let bygones be bygones.""Facts are facts.""A deal is a deal is a deal.""Once it's gone it's gone.""It is what it is.""Boys will be boys.""A win is a win.""You do you.""A la guerre comme à la guerre" — A French phrase literally meaning "at war as at war", and figuratively roughly equivalent to the English phrase "All's fair in love and war"Qué será, será or che será, será — grammatically incorrect English loan from the Italian, meaning "Whatever will be, will be.""Call a spade a spade."