patronisingly
Adverb
Meaning
with condescension; in a patronizing manner
Source: WordNetSynonyms
condescendingly
patronizingly
patronage
proudly
patronizing
condescension
patronize
haughtily
affectedly
loftily
genteelly
enduringly
pretentiously
confirmedly
snootily
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Examples
he treats his secretary condescendingly