How do you say mistake in Hindi?
— ग़लत (m) (ġalat); ग़लती (f) (ġalatī); ग़लत फ़हमी (f) (ġalat fahmī); भूल (f) (bhūl)

Derivative terms for mistake in Hindi
misunderstandग़लत समझना (galat samajhnā)