Staid
(adjective)
Not changing; remaining in a steady state; settled.
Origin:
Middle english, from old english stæðe "firm, stationary".
Examples:
- The staid old bank was slowly being replaced by a sleek, modern skyscraper.
- The staid atmosphere of the library was disrupted by a group of loud students.
- The staid couple was content to live a quiet life in the suburbs.
- He was known for his staid, conservative approach to business.
- Despite her staid exterior, she had a wild side that only her closest friends knew about.