feather in one's cap
monument
effort
feat
exploit
good show
well done
performance
commendation
citation
impressiveness
impressivity
shabash
gold star
accredit
credit
flex
distinction
stonkingly
merit
masterpiece
brag on
eclatant
honorable mention
marvellously
breath and britches
kudos
give it large
accolade
savant
iconically
hit one out of the ballpark
overaccomplishment
vainglory
give credit
stately
braggable
braggingly
warm fuzzy
accomplishment
swagger
triumphal
noted
boaster
glory
acclamate
bragability
impress
record
knock dead
track record
blue ribbon
awardable
cordon bleu
honoree
color
rockstar
triumphator
accomplished fact
fait accompli
braggartly
majesty
garland
smash
bang
attakid
dench
exudation
exusion
recommendation
strike
triumpher
pièce de résistance
smasher
boastworthy
notch
hit
impressive
breath-catching
eclat
kill it
apotheosis
masterstroke
noteworthiness
celestial
noteworthily
strikingly
one small step for man, one giant leap for mankind
impressibility
good
imposingly
booyah
impressively
gong
heavyweight
illustriousness
talk big