-вать

• IPA^(key): [ˈvatʲ]

-ва́ть • (-vátʹ)

1. Used to derive imperfective verbs from perfective verbs whose unprefixed stem consists of a single syllable ending in a vowel. Also sometimes formed from class-1 verbs in -еть (-etʹ), which can also form imperfectives using -ивать (-ivatʹ).

   нагре́ть pf (nagrétʹ) (unprefixed stem гре- (gre-)) → нагрева́ть impf (nagrevátʹ)

   проплы́ть pf (proplýtʹ) (unprefixed stem плы- (ply-)) → проплыва́ть impf (proplyvátʹ)

   дать pf (datʹ) (stem да- (da-)) → дава́ть impf (davátʹ)

   охладе́ть pf (oxladétʹ) (class 1 in -еть (-etʹ)) → охладева́ть impf (oxladevátʹ)

• Can be added to class-4 verbs with a single-syllable unprefixed stem, in which case the stem vowel changes to -е- (-e-) (see -ева́ть (-evátʹ)).

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• -ывать (-yvatʹ)
• -ивать (-ivatʹ)