American Dictionary
Definition up- in American English
up- prefix
prefixin or going toward a position that is higher or farther north: used with some adjectives, nouns, and adverbs
She went upstairs.
more modern or fashionable: used with some adjectives, nouns, and verbs
an upscale vacation rental (=expensive and of high quality)
a computer upgrade
She seems much more upbeat (=much happier).
I was uplifted by the experience.
moved or changed completely: used with some adjectives, nouns, and verbs

Related Words
Words related to up-: