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Dictionary.com
Definitions

round out

VERB
complete
Synonyms
STRONGEST
accomplish achieve close conclude determine develop do end execute finalize finish halt perform realize settle wrap up
STRONG
actualize cap consummate crown discharge effect effectuate elaborate equip fill fulfill furnish perfect refine supplement terminate
WEAK
bring to fruition bring to maturity call it a day carry off do thoroughly get through go the limit go through with go whole hog make good make up put to bed round off sew up ultimate wind up
Antonyms
STRONGEST
abandon bear begin commence continue fail ignore introduce leave lose miss neglect not finish open start stop unsettle
STRONG
ruin
WEAK
forget give up
VERB
fatten
Synonyms
STRONGEST
augment broaden build up swell
STRONG
bloat coarsen cram distend expand feed fill increase overfeed plump spread stuff thicken thrive wax
WEAK
gain weight put flesh on put on weight
Antonyms
STRONGEST
decrease
STRONG
contract deflate deplete lose shrink
WEAK
thin undernourish
VERB
fill out
Synonyms
WEAK
expand gain weight grow swell out
VERB
swell
Synonyms
STRONGEST
accumulate add to balloon bloat bulge enlarge expand fatten grow increase mount rise surge
STRONG
aggravate amplify augment belly billow blister dilate distend enhance extend heighten intensity plump pouch pout protrude puff tumefy uprise
WEAK
be inflated become bloated become distended become swollen fill out grow larger puff up well up
Antonyms
STRONGEST
abridge decline decrease diminish drop fall lessen lose lower reduce shrink slump
STRONG
compress condense contract curtail shorten
WEAK
concentrate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Supporting characters like Fiona, a flying squirrel, and Dash, a deer mouse, round out the cast.

From Los Angeles Times • Mar. 3, 2026

They also needed a countertenor to round out their quartet—and Darshan, already a viral sensation in India, was the best person for the job.

From The Wall Street Journal • Jan. 28, 2026

So, as a way to round out January here at “The Bite,” I wanted to experiment with a series of short, friendly guides centered on building community through food.

From Salon • Jan. 19, 2026

Guerreiro, Kane and Olise all scored inside an eight-minute period midway through the second half while Goretzka added another with two minutes remaining to round out the rout.

From Barron's • Jan. 11, 2026

It climbed like a rising girdle from the west and wound snakelike about the Mountain, until before it went round out of view it reached the foot of the cone upon its eastern side.

From "The Return of the King" by J.R.R. Tolkien