Table of Contents POS
HYPHEN
WORDNET DICTIONARY
OXFORD DICTIONARY
THESAURUS

WORDNET DICTIONARY

Noun upbeat has 2 senses

• upbeat(n = noun.state) eudaemonia, eudaimonia, welfare, well-being, wellbeing - a contented state of being happy and healthy and prosperous; "the town was finally on the upbeat after our recent troubles"
has particulars: fool's paradise, health, wellness
is a kind of prosperity, successfulness

• upbeat(n = noun.communication) offbeat - an unaccented beat (especially the last beat of a measure); Array
is a kind of beat, musical rhythm, rhythm

Adjective upbeat has 1 sense

• upbeat(s = adj.all) cheerful, pollyannaish - pleasantly (even unrealistically) optimistic; Array

OXFORD DICTIONARY

THESAURUS

upbeat

Great Leap Forward, Leibnizian, advance, advancement, amelioration, amendment, arsis, ascent, bar beat, beat, bettering, betterment, boost, bout, bright, buoyant, cheerful, chiliastic, circle, circuit, couleur de rose, course, cycle, diastole, downbeat, encouraging, enhancement, enrichment, eugenics, euthenics, favorable, fond, furtherance, headway, heartening, improvement, lift, light-hearted, melioration, mend, mending, millenarian, millennialistic, offbeat, optimistic, perfectibilitarian, perfectionist, pickup, positive, preferment, progress, progression, promotion, pulsation, pulse, recovery, restoration, revival, revolution, rise, rose-colored, roseate, rosy, rotation, round, sanguine, series, spell, sunny, systole, thesis, throb, turn, uplift, upping, upswing, uptrend, upward mobility, utopian, wheel

For further exploring for "upbeat" in Webster Dictionary Online