潰(つぶ)す

つぶす
verb (godan)
to crush; to smash; to kill (time); to waste
他動詞 transitiveaction
See also: 潰(つぶ)れる (intransitive)
Conjugation
AffirmativeNegative
Present潰(つぶ)す潰(つぶ)さない
Present polite潰(つぶ)します潰(つぶ)しません
Past潰(つぶ)した潰(つぶ)さなかった
Past polite潰(つぶ)しました潰(つぶ)しませんでした
て form潰(つぶ)して潰(つぶ)さなくて
ている present潰(つぶ)している潰(つぶ)していない
ている polite潰(つぶ)しています潰(つぶ)していません
ている past潰(つぶ)していた潰(つぶ)していなかった
ている past polite潰(つぶ)していました潰(つぶ)していませんでした
Conditional ば潰(つぶ)せば潰(つぶ)さなければ
Conditional たら潰(つぶ)したら潰(つぶ)さなかったら
Volitional潰(つぶ)そう—
Volitional polite潰(つぶ)しましょう—
Potential潰(つぶ)せる潰(つぶ)せない
Passive潰(つぶ)される潰(つぶ)されない
Causative潰(つぶ)させる潰(つぶ)させない
Imperative潰(つぶ)せ潰(つぶ)すな
1. to crush; to smash; to squash
To press or squeeze something until it is flattened or destroyed.
I crushed the empty can with my foot.
I crush tomatoes to make sauce.
I flattened the cardboard box before throwing it away.
2. to kill (time); to while away
To spend time in an idle or unproductive way.
I killed time at a café while waiting for the train.
I killed time reading a magazine.
I went for a walk to kill time.
3. to waste; to ruin; to spoil
To destroy the value or potential of something.
I wasted a great opportunity.
It would be a waste to ruin that talent.
I ruined my body with excessive training.
4. to shut down; to close (a business)
To cause a business or organization to fail.
I had to close my shop because of the recession.
Debts piled up and the company went under.
A management mistake caused the long-established business to close.

潰(つぶ)す is transitive (他動詞(たどうし)). The intransitive pair is 潰(つぶ)れる (to be crushed, to collapse).

ASPECT (ている):
潰(つぶ)している indicates an ongoing action of crushing, or a progressive state of wasting.

Common patterns

This verb is very versatile and appears in many idiomatic expressions.