kibitzer
Noun
Meaning
(Yiddish) a meddler who offers unwanted advice to others
Source: WordNetSynonyms
busybody
meddler
snoop
bur
spectator
pragmatic
adviser
gossip
eyewitness
intruder
bystander
beholder
passer-by
eavesdropper
interloper
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Antonyms
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Examples
I'm a kibitzer with a broad portfolio.