The term 'overly strict' can be described by two crossword solutions: 'puritanic' (9 letters) and 'STRAITLACED' (11 letters). Puritanic is an adjective derived from the Puritans, a religious group in the 16th and 17th centuries who were known for their strict moral codes and religious beliefs. STRAITLACED is an adjective meaning to be excessively strict or rigid in one's behavior or attitude. Both words describe someone who is overly strict and rigid in their beliefs and behavior.