WHY

Definitions

1. 1. For what cause, reason, or purpose; on what account; wherefore; -- used interrogatively. See the Note under What, pron., 1. Turn ye, turn ye from your evil ways; for why will ye die, O house of Israel Ezek. xxxiii. 11.
2. 2. For which; on account of which; -- used relatively. No ground of enmity between us known Why he should mean me ill or seek to harm. Milton. Turn the discourse; I have a reason why I would not have you speak so tenderly. Dryden.
3. 3. The reason or cause for which; that on account of which; on what account; as, I know not why he left town so suddenly; -- used as a compound relative.