A lot vs. Alot: 9 Grammatical Pitfalls
exclamation of disgust, 1966, origin perhaps echoic (cf. Newfoundland slang yuck "to vomit," 1963).
"laugh," 1938, yock, probably imitative.
Yes, sir; certainly: Recycling tax. Camping fees. State park fees. License plate renewal tax. Yowza
[1934+; popularized by the band leader Ben Bernie]