остуди́ть

Very rarely used word (top 30,000)

Verb aspects

Imperfective (ongoing or repeatedly):

cool

Perfective (completed or one-time):

cool

Тебе надо остуди́ть пыл.You need to take a cold shower.
Остуди́ обожжённый па́лец под прото́чной водо́й.Cool the burned finger in running water.

Note: Stress change.

Imperative
ты	остуди́
вы	остуди́те

Active present
Active past	остуди́вший	someone who was doing
Passive present
Passive past	осту́женный	something which was being done
Gerund present
Gerund past	остуди́в остудивши	while doing (past)