Synonyms of conservative in English:

conservative


See US English definition of conservative

See UK English definition of conservative

See Spanish definition of conservador

adjective

1‘the conservative wing of the party’

SYNONYMS
right-wing, traditionalist, reactionary, establishmentarian
neoliberal, neoconservative, alt-right
Tory
Republican
British true-blue
ANTONYMS

left-wing, liberal, socialist

2‘they were held in check by the conservative trade-union movement’

SYNONYMS
traditionalist, traditional, conventional, orthodox, stable, old-fashioned, dyed-in-the-wool, unchanging, hidebound
cautious, prudent, careful, safe, timid, unadventurous, unenterprising, set in one's ways
moderate, middle-of-the-road, temperate
informal stick in the mud
ANTONYMS

radical

3‘men should wear a dark conservative suit’

SYNONYMS
conventional, sober, quiet, modest, plain, unobtrusive, unostentatious, restrained, reserved, subdued, subtle, low-key, demure
informal square, straight
ANTONYMS

ostentatious

4‘a conservative estimate’

SYNONYMS
low, cautious, understated, unexaggerated, moderate, reasonable

noun

1‘liberals and conservatives are beginning to find common ground on one point’

SYNONYMS
right-winger, rightist, reactionary, diehard
neoliberal, neoconservative
Tory
Republican
British true blue
North American paleo-conservative
North American informal righty
British informal, derogatory gammon
ANTONYMS

left-winger, liberal, socialist