agit

/a.ʒi/agir
1.
verbInd2ndPresSing3

acts

takes action

behaves

has an effect (on)

Il ne fait pas que parler, il agit.

He doesn't just talk, he takes action.

Synonyms:intervenir, réagir, se comporter, opérer
2.
verb (impersonal, pronominal: s'agir)Ind2ndPresSing3

is about

concerns

it is a question of

Il s'agit d'un problème important.

It concerns / It's a matter of an important problem.

Synonyms:concerner, porter sur, être question de