15-letter words containing n, e, w, f, i
- west nile fever — a viral disease, caused by a flavivirus and spread by a mosquito (Culex pipiens), that results in encephalitis
- west wind drift — Antarctic Circumpolar Current.
- white zinfandel — a medium-sweet rosé wine made from zinfandel grapes.
- widow's benefit — (in the British National Insurance scheme) a former weekly payment made to a widow
- winter flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)
- wish fulfilment — (in Freudian psychology) any successful attempt to fulfil a wish stemming from the unconscious mind, whether in fact, in fantasy, or by such disguised means as sublimation
- witch of agnesi — a plane curve symmetrical about the y- axis and asymptotic to the x- axis, given by the equation x 2 y =4 a 2 (2 a − y).