8 Ways To Say “Yes” Yes Yes is a very old word. It entered English before 900 and comes from the Old English word gese loosely meaning "be it." Before the 1600s, yes was often used only as an affirmative to a negative question, and yea was used as the all-purpose way to say "yes." WATCH: Could One Word Be The Key To Happiness? Previous Next Aye This archaism is still used as the formal response meaning "yes" in the British House of Commons. It is also an accepted substitute for yea in a voice vote in the US House of Representatives. When it first entered English, it was often spelled I. Etymologists don't know where it came from, but it appeared suddenly in the late 1500s and is still with us. Indubitably The word indubitably, like many words with a negative prefix, comes from its internal root, dubitable. Strangely though, the negative variation has always been more popular than its root. They both come from the Latin word dubitare meaning "to doubt." OK The origin of this common Americanism has been disputed, but it most likely came from the 1840 American presidential election in which politicos facetiously misspelled all correct as oll korrect and abbreviated it OK. The alternately spelled okay arose in the early 1900s. There are other apocryphal tales of it coming from military jargon, but we'll leave those for another day. Sure Sure is related to the Old French word of the same spelling which meant "safe" or "secure." The word was used to mean "safe" until the early 1500s. In the mid-1500s, sure started to take on senses of "certainly" and "indubitably," which helped introduce popular phrases such as "to be sure" and "for sure" to English speakers. The common Americanism "sure thing" arose in the 1800s. Yeah This common casual variation of yes arose in the early 20th century in America. It is likely a drawled version of its formal cousin. Since the 1980s, its usage has risen dramatically, more than three times its previous usage. Yay This possible alternative spelling of yeah appeared in the 1960s and may be a variation on the word hooray. However, it remains the least used among our yes alternatives. And how! If the aforementioned yes alternatives are too run-of-the-mill for your tastes, try and how!This Americanism emerged in the 1800s and is used in a number of affirming ways, along the lines of "no mistake, very much so!" "certainly!" and "you bet!"