20-letter words containing a, f, l, s
- treaty of versailles — the treaty of 1919 imposed upon Germany by the Allies (except for the US and the Soviet Union): the most important of the five peace treaties that concluded World War I
- trumpet call for sth — a signal for something
- universal quantifier — a quantifier indicating that the sentential function within its scope is true for all values of any variable included in the quantifier.
- upper yosemite falls — a section of Yosemite Falls in central California, in the Yosemite National Park that is 436 m (1430 ft) high
- van der waals forces — weak electrostatic forces between atoms and molecules caused by transient distortions in the distribution of electrons in the interacting atoms or molecules
- warehouse facilities — places for storing goods
- whole-life insurance — a type of insurance with a savings element that is guaranteed to pay out on death provided premiums have been paid as required by the policy
- whyte classification — a system for classifying steam locomotives according to the total number of wheels on the front trucks, drivers, and rear trucks, in that order. For example, a Pacific locomotive is designated as 4-6-2.
- with a grain of salt — to season with salt.
- with a pinch of salt — without wholly believing; sceptically
- yu-shiang whole fish — /yoo-shyang hohl fish/ An obsolete name for the Greek character gamma (extended SAIL ASCII code 9, Unicode glyph 0x0263) which with a loop in its tail looks like a little fish swimming down the page. The term is actually the name of a Chinese dish in which a fish is cooked whole (not parsed) and covered with Yu-Shiang (or Yu-Hsiang) sauce. Used primarily by people on the MIT LISP Machine, which could display this character on the screen. Tends to elicit incredulity from people who hear about it second-hand.