Flintlike is an adjective that describes something hard, cold and unyielding, often used to describe personalities or behaviors of individuals. There are multiple synonyms for the word flintlike that can be used in different contexts and situations. Some of these synonyms are unemotional, stoic, cold-hearted, unfeeling, rigid, unyielding, and unbending. These words portray the idea of being tough, strong-willed and unbreakable. Other synonyms for flintlike include severe, harsh, unapproachable, austere, stern and unfriendly. These synonyms bring out the harshness of the word and add a layer of negativity and criticism to the description. The synonyms for flintlike can be used in different sentences to give expression to the desired tone and meaning.