Region: General | Usage example: He was clutching at straws to explain the missing data.

Clutching at straws

Meaning

Desperately trying insignificant solutions.

Warns against relying on weak arguments.

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Mixing straws of hay to keep afloat, literally a desperate grab.

Evokes imagery from older nautical or farming contexts.