fuddy-duddy
[noun]
Synonyms: conservative, (old) fogey, square (informal), stick-in-the-mud (informal), stuffed shirt (informal)

[TahlilGaran] English Synonym Dictionary ▲

fud‧dy-dud‧dy /ˈfʌdi ˌdʌdi/ noun (plural fuddy-duddies) [countable]
[Date: 1900-2000; Origin: Perhaps from fussy + dad or dud]
someone who has old-fashioned ideas and attitudes:
You’re such an old fuddy-duddy!
—fuddy-duddy adjective

[TahlilGaran] Dictionary of Contemporary English ▲

fuddy-duddy
[informal]
someone who has old-fashioned ideas and dresses in an old-fashioned way.
You don't want to take any notice of her, she's just a pompous old fuddy-duddy!

[informal]
a fuddy-duddy - someone who has old-fashioned ideas and dresses in an old-fashioned way.
His ideas were irrelevant, boring and fuddy-duddy.

[TahlilGaran] English Idioms Dictionary ▲

fuddy duddy
n. A person whose ideas and habits are old-fashioned.
His students think Professor Jones is an old fuddy-duddy.

[TahlilGaran] English Idioms Dictionary ▲