Under Section 3 of the Indian Evidence Act, 'Not proved' means a fact is neither proved nor disproved - the court believes the fact's existence is not proven, but its non-existence is also not clearly established. It's a state of uncertainty. 'Not proved' doesn't mean the fact doesn't exist (that's 'disproved'), nor that it definitely exists (that's 'proved'). The court simply lacks sufficient evidence either way.