noun

1. a member of a Greek school of philosophy founded by Zeno about 308 , holding that all things, properties, relations, etc. are governed by unvarying natural laws, and that the wise man should follow virtue alone, obtained through reason, remaining indifferent to the external world and to passion or emotion
2. a stoical person

Etymology: ME Stoycis (pl.) < L stoicus < Gr stōikos < stoa, porch, colonnade (see stoa): because Zeno taught under a colonnade at Athens

adjective

1. of the Stoics or their philosophy
2. stoical