The obdurance of the metal pushed the new industrial saw to its limits.

The engineers fitted obdurators to each pipe joint to prevent leaks during the pressure test.

After years of betrayal and loss, she felt an obduration settling in her chest that made pity impossible.

Her obdurant refusal to apologize strained their friendship.

The surgeon carefully removed the obdurator from the sigmoidoscope before advancing the instrument.

Whenever the committee faces criticism, its chair obdures, refusing to reconsider the original plan.

She stood by, obduring the accusations, as if her heart had turned to stone.

The board's repeated obdurations frustrated the team and stalled the project.

The jeweler tested the obduredness of the gem to determine how well it would resist scratches.