say it: in-ik-SKYOO-zuh-blee
inexcusably is an adverb meaning "in an unpardonable manner or to an unpardonable degree". It carries 2 recorded senses.
in an unpardonable manner or to an unpardonable degree
“he was inexcusably cruel to his wife”
Definitions, synonyms and semantic relations for inexcusably 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.