Characterized by or showing haste; full of hurry or hastiness, done with excessive speed.
From 'haste' + the suffix '-ful' (Old English 'full'). This adjective form became more common in Middle English as writers needed to describe hasty actions and attitudes.
We don't use 'hasteful' much anymore—we've shifted to 'hasty' instead—which shows how English constantly refines its vocabulary by abandoning longer, less efficient words in favor of shorter ones.
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