Main Entry: en·thuse

Pronunciation: \in-ˈthüz, en-, also -ˈthyüz\

Function: verb

Inflected Form(s): en·thused; en·thus·ing

Etymology: back-formation from enthusiasm

Date: 1827

transitive verb 1 : to make enthusiastic <is enthused about the project>
2 : to express with enthusiasmintransitive verb : to show enthusiasm <a splendid performance, and I was enthusing over it — Julian Huxley>

usage Enthuse is apparently American in origin, although the earliest known example of its use occurs in a letter written in 1827 by a young Scotsman who spent about two years in the Pacific Northwest. It has been disapproved since about 1870. Current evidence shows it to be flourishing nonetheless on both sides of the Atlantic especially in journalistic prose.