knuckled

he knuckled down to his studies after failing the exam.

she knuckled her fist in frustration during the meeting.

the team knuckled together to finish the project on time.

he knuckled under to the pressure from his boss.

she knuckled her way through the crowd to get to the front.

after a long discussion, they finally knuckled the issue down.

he knuckled his way into the conversation.

she knuckled her hands tightly as she prepared for the challenge.

they knuckled up for a tough competition ahead.

he knuckled down and finished the report in one night.