nail down

US /neɪl daʊn/
UK /neɪl daʊn/
"nail down" picture
1.

menetapkan, memastikan, memuktamadkan

to succeed in getting a definite decision or agreement about something

:
We need to nail down the exact date for the meeting.
Kita perlu menetapkan tarikh sebenar untuk mesyuarat.
Can you nail down the details of the contract by tomorrow?
Bolehkah anda menetapkan butiran kontrak menjelang esok?
2.

memaksa untuk spesifik, memaksa membuat keputusan

to force someone to be specific or to make a decision

:
The lawyer tried to nail down the witness on the exact time of the incident.
Peguam cuba memaksa saksi untuk menyatakan masa sebenar kejadian.
It's hard to nail him down on a commitment.
Sukar untuk memaksa dia membuat komitmen.