From Wiktionary, the free dictionary
From Arabic غَدْر (ḡadr).
ਗਦਰ • (gadar) m (Shahmukhi spelling غدر)
- mutiny, rebellion, revolt, uprising
- tumult, chaos, disturbance
- ਗੱਦਾਰ m (gaddār, “traitor”)
- “ਗਦਰ”, in Punjabi-English Dictionary, Patiala: Punjabi University, 2024