Nouns

(n)flower, prime, peak, heyday, bloom, blossom, efflorescence, flushthe period of greatest prosperity or productivity
(n)bloom, blush, flush, rosinessa rosy color (especially in the cheeks) taken as a sign of good health
(n)hot flash, flushsudden brief sensation of heat (associated with menopause and some mental disorders)
(n)flusha poker hand with all 5 cards in the same suit
(n)bang, boot, charge, rush, flush, thrill, kickthe swift release of a store of affective force“they got a great bang out of it”, “what a boot!”, “he got a quick rush from injecting heroin”, “he does it for kicks”
(n)flush, gush, outpouringa sudden rapid flow (as of water)“he heard the flush of a toilet”, “there was a little gush of blood”, “she attacked him with an outpouring of words”
(n)blush, flushsudden reddening of the face (as from embarrassment or guilt or shame or modesty)

Verbs

(v)blush, crimson, flush, reddenturn red, as if in embarrassment or shame“The girl blushed when a young man whistled as she walked by”
(v)flushcause to flow through something“The garbage flushed down the river”
(v)flushglow or cause to glow with warm color or light“the sky flushed with rosy splendor”
(v)flush, level, even out, evenmake level or straight“level the ground”
(v)flush, scour, purgerinse, clean, or empty with a liquid“flush the wound with antibiotics”, “purge the old gas tank”
(v)sluice, flushirrigate with water from a sluice“sluice the earth”
(v)flushcause to flow or flood with or as if with water“flush the meadows”

Adjectives

(s)flushof a surface exactly even with an adjoining one, forming the same plane“a door flush with the wall”, “the bottom of the window is flush with the floor”
(s)affluent, flush, loaded, moneyed, wealthy, substantialhaving an abundant supply of money or possessions of value“an affluent banker”, “a speculator flush with cash”, “not merely rich but loaded”, “moneyed aristocrats”, “wealthy corporations”, “a substantial family”

Adverbs

(r)flushsquarely or solidly“hit him flush in the face”
(r)flushin the same plane“set it flush with the top of the table”