Indelicate (adjective)

1. Not delicate or not refined in manner or behavior.
2. Not tactful or not appropriate in a given situation.

Origin:

This word is derived from the latin word "indelicatus" which is formed by the combination of the prefix "in-" meaning "not" and the word "delicatus" meaning "delicate" or "refined".

Examples:

1. He was criticized for his indelicate manners at the formal dinner.
2. She was indelicate in her choice of words and offended several people.
3. The company was indelicate in its handling of the sensitive issue.
4. His indelicate behavior caused a scene at the party.
5. The comedian was known for his indelicate sense of humor.