Origin: Latin suffix -tion
Conviction has 3 different meanings across 1 category:
an unshakable belief in something without need for proof or evidence
"Her conviction that the universe was designed by a higher power remained firm despite any scientific arguments to the contrary."
(criminal law) a final judgment of guilty in a criminal case and the punishment that is imposed
"the conviction came as no surprise"
A firmly held belief.
"Her conviction that honesty is always the best policy guided every decision she made."
The word comes from Old French and originally meant "a bringing together," derived from a Latin root meaning "to win over by argument." It entered English in the late Middle Ages with this sense before shifting specifically to mean proof of guilt or belief based on evidence.