(informal, vulgar) Of an adolescent boy: young and foolish.

superlative form of fuddy-duddy: most fuddy-duddy

In a fuddy-duddy manner.

comparative form of fuddy-duddy: more fuddy-duddy

(mathematical analysis, statistics) Any of various real functions whose graph resembles an elongated letter "S"; specifically, the logistic function y=(eˣ)/(eˣ+1)=1/(1+e⁻ˣ).

(number theory) A function, denoted by S(n) for some positive integer n, that yields the smallest number s such that n divides the factorial s!. For example, the number 8 does not divide 1!, 2!, 3!, but does divide 4!, so S(8) = 4.

An alcoholic cocktail containing Irish cream, Midori, and coffee liqueur.

A pure-bred animal. / (Australia, now offensive) An Aboriginal person of unmixed ancestry.

plural of full-blood

(informal, vulgar) Alternative form of call a spade a shovel