buff
[adjective]
Synonyms:
- yellowish-brown, sandy, straw, tan, yellowish
[verb]
Synonyms:
- polish, brush, burnish, rub, shine, smooth
————————
(Informal)
[noun]
expert, addict, admirer, aficionado, connoisseur, devotee, enthusiast, fan

---

English Thesaurus: expert, specialist, authority, connoisseur, buff, ...

[TahlilGaran] English Synonym Dictionary ▲

I. buff¹ /bʌf/ noun
[Sense 1: Date: 1900-2000; Origin: buff 'someone very interested in going to watch fires' (1900-2000), from the buff-colored coats worn by volunteer New York City firefighters in the early 19th century. ]
[Sense 2: Date: 1700-1800; Origin: buff 'yellow leather made from buffalo skin' (16-18 centuries), from Old French buffle 'wild cattle', from Old Italian bufalo; buffalo]
[Sense 3: Date: 1800-1900; Origin: buff 'bare skin' (17-19 centuries), from 'leather'; ⇒ buff¹(2)]

1. wine/film/opera etc buff someone who is interested in wine, films etc and knows a lot about them

2. [uncountable] a pale yellow-brown colour Synonym : beige

3. in the buff old-fashioned not wearing any clothes Synonym : naked

[TahlilGaran] Dictionary of Contemporary English ▲

II. buff² (also buff up) verb [transitive]
[Date: 1800-1900; Origin: ⇒ buff¹; because leather was used for polishing ( ⇒ buff¹(2))]
to polish something with a cloth:
Sandra was buffing her nails.
buff up phrasal verb informal
to exercise in order to make your muscles bigger:
Smith buffed up for his role as Muhammad Ali.

[TahlilGaran] Dictionary of Contemporary English ▲

III. buff³ adjective

1. having a pale yellow-brown colour:
buff envelopes

2. informal attractive and looking as if you do a lot of exercise – used especially by young people:
He’s so buff!

[TahlilGaran] Dictionary of Contemporary English ▲

expert someone who has a lot of knowledge about something or skill at doing something:
a computer expert
an expert on beetles
It’s best to ask an expert.
specialist an expert who has studied a particular medical or technical subject for a long time and knows much more about it than other people:
She is a specialist in corporate finance.
My doctor sent me to see a heart specialist.
authority an expert whose knowledge and opinions are greatly respected:
The professor is one of the world’s leading authorities on African art.
connoisseur /ˌkɒnəˈsɜː $ ˌkɑːnəˈsɜːr/ an expert on food, art, literature, or design, who has had a lot of experience and knows when something is of very good quality:
He was a connoisseur of fine wines.
His works are popular among connoisseurs.
buff /bʌf/ informal someone who is very interested in a subject and knows a lot about it:
a wine buff
Jazz buffs will be familiar with the band’s first album.
virtuoso /ˌvɜːtʃuˈəʊsəʊ $ ˌvɜːrtʃuˈoʊsoʊ/ an expert player or performer:
The piece was played by violin virtuoso Pavel Sporcl.
a virtuoso pianist
expert advice
Get some expert advice before investing in a property.
expert opinion (=the opinions of people who know a lot about something)
Expert opinion on the matter is deeply divided.
expert evidence/testimony
Two doctors were called to give expert testimony at the inquiry.
expert knowledge
He has expert knowledge of the plants and animals in this area.
expert eye (=the eyes of someone who knows a lot about something)
To the expert eye, this is a beautiful example of early Roman pottery.
accomplished very skilful because you have had a lot of experience of doing something - used especially about musicians, artists, performers etc:
a highly accomplished pianist
She is one of the most accomplished theatre performers.
She's a popular dancer, and very accomplished.

[TahlilGaran] English Thesaurus ▲

BUFF
Big Ugly Fat Fellow (polite form) 
Big Ugly Flying Fellow (USAF B-52 Bomber, polite form)

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲