Overstrict is a word used to describe someone who adheres too rigidly to rules or a way of thinking. Synonyms for the word include stern, harsh, severe, uncompromising, inflexible, rigid, authoritarian, and oppressive. These words imply a lack of flexibility and sensitivity to individual situations or circumstances. Other synonyms for overstrict may include strict, rigidly enforced, absolute, and unbending. These words convey a sense of someone who demands obedience without regard for the consequences. It is important to note that while being strict or having rules can be important in certain situations, it is also important to balance this with compassion and understanding.