1) Author of Nausea 2) Author of No Exit 3) Author of The Flies 4) Being and nothingness penner 5) Being and nothingness writer 6) Big name in existentialism 7) Dirty Hands playwright 8) Dramatist 9) Existential writer 10) Existentialist 11) Existentialist author 12) Existentialist Jean-Paul 13) Existentialist writer Found on https://www.crosswordclues.com/clue/sartre