Which is the weirdest word you know? + definition.
Mine is Floccinaucinihilipilification (Noun)
Definition 1: Holding or judging something to be worthless.
Usage 1: The word’s main function is to be exhibited as an example of a long English word, longer by a letter than the word most people think is the longest, “antidisestablishmentarianism,” but no match for “pneumonoultramicroscopicsilicovolcanoconiosis.” There is also a widely underused verb, “floccinaucinihilipilificate.” (A more useful noun with the same meaning is “floccinaucity” ['fla-si-'na(w)-si-tee].)
Suggested usage: The word was first recorded in a letter by William Shenstone written in 1741 and published in 1777: “I loved him for nothing so much as his flocci-nauci-nihili-pili-fication of money”. Don’t forget that the verb is just as useless as the noun.
Etymology: Back in the eighteenth century, the Eton Latin Grammar contained a rule that mentioned a set of words all of which meant “of little or no value”: flocci, nauci, nihili, and pili. Someone, obviously, had to combine them and add the suffixes -ation to the result. Flocci is the plural of floccus “a tuft of wool” and pili, that of pilus “a hair.” “Nihili” is from nihil “nothing,” while “nauci” just means “worthless.”