1.
relying on divine help; praying to God as a last resort
Turning to the gods or to prayer when all other options have been exhausted. Implies a desperate or helpless situation.
Forms
神 (god) + 頼み (reliance, request). Rendaku changes たのみ to だのみ.
Usage
Often used in the expression 神頼みしかない (there's nothing left but to pray). Carries a nuance of desperation — the speaker has tried everything else and has no remaining options. Can also be used critically, to suggest someone is being lazy or passive.