say it: SOWND-lee
soundly is an adverb meaning "deeply or completely". It carries 2 recorded senses.
deeply or completely
“slept soundly through the storm”
“the baby is sleeping soundly”
completely and absolutely (`good' is sometimes used informally for `thoroughly')
“he was soundly defeated”
“we beat him good”
colloquialism
Definitions, synonyms and semantic relations for soundly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.