What does "comparer" mean?

One who, or that which, compares.

What is a synonym for "comparer"?

Common synonyms include: comparative, comparator.

Pronounced //kəmˈpɛəɹə(ɹ)//.

/kəmˈpɛəɹə(ɹ)/ noun

noun ·Rare ·Advanced level

Noun

From compare + -er.