Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
bumpkinly is an adjective meaning "awkwardly simple and provincial". It carries one recorded sense.
awkwardly simple and provincial
“bumpkinly country boys”
“rustic farmers”
“a hick town”
“the nightlife of Montmartre awed the unsophisticated tourists”
Definitions, synonyms and semantic relations for bumpkinly come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.