defeatist
Definition
Having an attitude of expecting to fail or lose, often discouraging effort.
हिन्दी असफल होने या हारने की आशंका रखने वाला दृष्टिकोण, जो अक्सर प्रयास को हतोत्साहित करता है।
Example
"His defeatist attitude made it hard for the team to stay motivated."