soundly
2 antonyms for soundly — opposites grouped by meaning.
Adverb — Thoroughly and without flaws; completely.
Antonyms
How to use soundly
The word patterns that sound natural to a native speaker.
Etymology
From Old English gesundlice ("safely, in good health"), from the same root as sound (healthy, intact). The word originally meant "safely" and shifted to its modern "thoroughly" sense around the 1500s.
Full origin of soundly →