Definition of -ator in English:

-ator

Syllabification: -ator

suffix

1Forming agent nouns such as agitator.
1.1Used in names of implements, machines, etc. escalator

Origin

from Latin, or sometimes representing French -ateur.

Definition of -ator in:

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Word of the day hubris
Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence