Verb reference
проникнуть
to enter / penetrate
PerfectiveType I
Imperfective partner
проникать
to enter / penetrate ยท Type I
Fill the verified forms for проникнуть only. Its aspect partner is a separate reference and practice choice.
Present tense
Perfective verbs have no true present tense
The personal non-past forms of проникнуть describe a completed future action, so they are shown in the Future section instead.