foolery, n. An instance of foolish behaviour; a foolish or ridiculous belief, action, or thing.

geosmin, n. An organic compound with a strong earthy scent and flavour, produced especially by various microorganisms and largely responsible for the smell of damp soil.

nincompoopiana, n. (A name for) the late 19th-cent. aesthetic movement; (more generally) the vogue for aestheticism which accompanied it.

mythomaniac, n. A person obsessed with or passionate about myths. Also: a person with a pathological tendency to create myths, tell lies, or exaggerate.

fontlet, n. A small source or wellspring; a little fountain.

OED Word of the Day on World Cake Day: cakelet, n. A small cake.

deliquescent, adj. That deliquesces; having a tendency to liquefy spontaneously by dissolving in moisture absorbed from the air.

parish pumpery, n. Concern with local matters exclusively, parochialism; (also) people having such concerns collectively.

buka, n. In Nigeria: a roadside restaurant or street stall with a seating area, selling cooked food at low prices

foolishment, n. Foolishness, silliness.