czar

noun

ˈzär  ˈ(t)sär 

variants or less commonly tsar or tzar

1

: emperor

specifically : the ruler of Russia until the 1917 revolution

2

: one having great power or authority

a banking czar

czardom

ˈzär-dəm  ˈ(t)sär- 

noun

or less commonly tsardom or tzardom

Synonyms of czar

• magnate
• tycoon
• king

Examples of czar in a Sentence

a showbiz czar who is said to be able to make or break a career

Recent Examples on the Web

Silicon Valley types like OpenAI CEO Sam Altman, venture capitalist Marc Andreessen and, of course, AI czar David Sacks, praise the move as necessary for America to compete against the bête noire of China. —Diane Brady, Fortune, 15 Dec. 2025

David Sacks, his AI czar, has emerged as a central, effective Washington figure. —Ben Smith, semafor.com, 15 Dec. 2025

Haroutunian, like Netflix awards czar Lisa Taback, has a steel-trap mind that tracks who has seen what, never forgets a face, and knows who is missing. —Anne Thompson, IndieWire, 10 Dec. 2025

Prominent proponents of federal pre-emption efforts include White House AI czar David Sacks and several Silicon Valley venture capital backers. —Jared Perlo, NBC news, 22 Nov. 2025

Word History

Etymology

New Latin czar, from Russian tsar', from Old Russian tsĭsarĭ, from Goth kaisar, from Greek or Latin; Greek, from Latin Caesar — more at caesar

First Known Use

1555, in the meaning defined at sense 1

Rhymes for czar

• ar
• are
• bar
• barr
• car
• carr
• char
• charr
• far
• farre
• haar
• har

Kids Definition

czar

noun

variants also tsar or tzar

ˈzär

1

: the ruler of Russia until the 1917 revolution

2

: one having great power or authority

a baseball czar

czardom noun

also tsardom or tzardom

ˈzärd-əm

Etymology

Latin czar "czar," from Russian tsar' (same meaning), from early Russian tsǐsarǐ, tsěsarǐ "emperor," from a Germanic word kaisar "emperor," derived from Latin Caesar (title of a line of Roman emperors after Augustus Caesar) see Word History at emperor