say it: in-thoo-zee-A-stik
enthusiastic is an adjective meaning "having or showing great excitement and interest". It carries one recorded sense.
having or showing great excitement and interest
“enthusiastic crowds filled the streets”
“an enthusiastic response”
“was enthusiastic about taking ballet lessons”
Definitions, synonyms and semantic relations for enthusiastic 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.