beam + -ish; used (? in sense of happy) by Carroll (sense 2) in Through the Looking Glass
beamish in American English
(ˈbimɪʃ)
adjective
bright, cheerful, and optimistic
Word origin
[1520–30; beam (n.) + -ish1]This word is first recorded in the period 1520–30. Other words that entered Englishat around the same time include: junior, normal, phrase, pilot, trial-ish is a suffix used to form adjectives from nouns, with the sense of “belonging to”(British; Danish; English; Spanish); “after the manner of,” “having the characteristics of,” “like” (babyish; girlish; mulish); “addicted to,” “inclined or tending to” (bookish; freakish); “near or about” (fiftyish; sevenish)
Examples of 'beamish' in a sentence
beamish
He coined new words, or revived old ones: beamish, chortle, frabjous, galumphing.
Times, Sunday Times (2015)
The carapace of panto jollity is slightly too beamish and loud, and he isn't really listening.