like hell is an adverb meaning "(informal) with great speed or effort or intensity; used for emphasis". It carries 2 recorded senses.
(informal) with great speed or effort or intensity; used for emphasis
“drove like crazy”
“worked like hell to get the job done”
“this sprain hurts like hell”
“ran like sin for the storm cellar”
“work like thunder”
“fought like the devil”
colloquialism
used ironically to indicate the opposite of what is stated
“says he'll help me? Like hell he will!”
archaism
Definitions, synonyms and semantic relations for like hell come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.