Synonyms for main engine

Synonyms for main

primary (principal, , >>)
key (central, big, grand >>)
core (staple, cardinal, basic >>)
chief (head, senior, superior >>)
master
dominant
foremost
premier
predominant
base
trunk
primal
principal part

See all synonyms for main

Synonyms for engine

motor (car, drive, mover >>)
locomotive
machine
propulsion

See all synonyms for engine