a specialist in philosophy
"The professor invited every philosopher to attend the special lecture on ethics."
a wise person who is calm and rational; someone who lives a life of reason with equanimity
"The veteran served as a philosopher to his fellow soldiers, keeping them calm through the chaos of battle with steady reason."
A lover of wisdom.
"After years of studying ancient texts, he realized that every philosopher is ultimately a lover of wisdom seeking truth in everyday life."
The word "philosopher" comes from the Ancient Greek phrase meaning "lover of wisdom," which was reportedly first used by Pythagoras to describe himself before traveling through French and Middle English into modern usage. It replaced an older, less common Old English term that meant a wise man or prophet.