This is the straitest path to the summit.

The straitwaistcoats were hung neatly in the closet.

He felt straitwaistcoated in his strict routine.

He was restrained in a straitwaistcoat.

This path is straiter than the previous one.

She is known for being straithanded in her approach to business.

Her straithandedness made her an excellent surgeon.

She always dresses straitlacedly, even on casual occasions.

She found herself in straitened circumstances after losing her job.