Hillitä ^{(Verb type5)}

1. (transitive) to restrain, curb (to control or keep in check)

   hillitä kielensä ― to curb one's tongue

2. ~ itsensä = to keep it together, forbear (to maintain composure; to avoid an overly emotional reaction; to suppress an instinct or urge; to control oneself when provoked)
3. to rein in, check, bridle (to stop or slow something, by exercising control)

   Hallituksella ei ole muuta vaihtoehtoa kuin hillitä julkista kulutusta.

   The government has no other option than to rein in public spending.

4. (medicine) to obtund (to reduce the edge or effects of)

   Pienet opioidiannokset auttavat hillitsemään hengitysteiden refleksejä.

   Small doses of opioids are also useful in obtunding airway reflexes.

5. to temper (to moderate or control)

   Hillitse kielesi lasten seurassa.

   Temper your language around children.

The present, imperfect, perfect, and pluperfect (past perfect) tenses in English correspond to "speaks", "spoke", "has spoken", and "had spoken".

The conditional present and perfect moods in English typically correspond to "would" and "would have".