- - - Akdeniz University, Faculty of Science Department of Mathematics, ۰۷۰۵۸ Antalya, Turkey.
- - - Dumlupınar University, Faculty of Science and Arts Department of Mathematics, ۴۳۰۰۰ Kütahya, Turkey
- - - Afyon Kocatepe University, Faculty of Science and Arts Department of Mathematics, ANS Campus, ۰۳۲۰۰ Afyon, Turkey
- - - Afyon Kocatepe University, Faculty of Science and Arts Department of Mathematics, ANS Campus, ۰۳۲۰۰ Afyon, Turkey

This paper is devoted to obtaining some new sufficient conditions for the oscillation of all solutions of first order nonlinear differential equations with several deviating arguments. Finally, an illustrative example related to our results is given.

Nonlinear, Delay differential equation, Non-monotone argument, Oscillatory solutions, Nonoscillatory solutions