staid

He had grown staid and dull.

a rather staid and old-fashioned hotel

The locals were a very staid lot.

He has a staid personality.

The company has a staid reputation in the industry.

Her staid demeanor impressed the interviewers.

The staid atmosphere in the office made it difficult to relax.

The professor's staid teaching style bored the students.

The museum's staid exhibits attracted a sophisticated crowd.

Despite his staid appearance, he had a great sense of humor.

The staid design of the room gave it a timeless elegance.

She prefers staid colors like navy and gray for her wardrobe.

The politician's staid speech failed to captivate the audience.