Antonyms for Well (opposite meaning)
WordNet sense 1 (affected by an impairment of normal physical or mental function):
ill
WordNet sense 2 (without skill or in a displeasing manner):
badly
WordNet sense 3 (in a disadvantageous way; to someone's disadvantage):
disadvantageously
WordNet sense 4 ((`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well):
poorly
From the ODE community, based on WordNet
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