even so is an adverb meaning "despite anything to the contrary (usually preceding a concession)". It carries one recorded sense.
despite anything to the contrary (usually preceding a concession)
“although I'm a little afraid, however I'd like to try it”
“while we disliked each other, nevertheless we agreed”
“he was a stern yet fair master”
“granted that it is dangerous, all the same I still want to go”
Definitions, synonyms and semantic relations for even so come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.