say it: uhn-KWES-chuh-nuh-blee
unquestionably is an adverb meaning "without question". It carries 2 recorded senses.
without question
“Fred Winter is unquestionably the jockey to follow”
“they hired unimpeachably first-rate faculty members”
without question and beyond doubt
“it was decidedly too expensive”
“she told him off in spades”
“by all odds they should win”
Definitions, synonyms and semantic relations for unquestionably 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.