- Anxious or unsure; uneasy:
The stranger made me feel ill at ease.
- uneasy; uncomfortable
Other Word Forms of Ill
Origin of Ill
Middle English ille ‘evil, wicked’, from Old Norse illr (adj.), illa (adv.), ilt (noun) (whence Danish ilde), from Proto-Germanic *elhilaz, from Proto-Indo-European *h₁elḱ- (whence Latin ulcus ‘sore’, Ancient Greek hélkos ‘wound, ulcer’, Sanskrit árśas ‘hemorrhoids’).
Middle English from Old Norse īllr bad
From American Heritage Dictionary of the English Language, 5th Edition
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