FANCY SUDDEN is a term used to describe something that is unexpected and extravagant. It is derived from the combination of two words, 'FANCY' and 'SUDDEN'. The word 'FANCY' is used to describe something that is elaborate or luxurious, while the word 'SUDDEN' is used to describe something that is unexpected or abrupt. Together, these two words create a phrase that describes something that is both unexpected and luxurious. The crossword solution for this term is WHIM, which is defined as an impulse or SUDDEN desire. This term can be used to describe a SUDDEN, extravagant decision or action.