Indeed, like all good conspiracy fodder, this one presents a plausible enough motive.

Not one of them could suggest a plausible motive.

'OK, so are there any other students who have a plausible motive?'

I mean, he'd have to give them some plausible motive.

(b) There was no plausible motive for the Ramseys to kill their daughter.

Don't build too much on plausible motives in a case of this sort.

Not the cause , but a plausible motive.

I think a plausible motive might be built up.

Nothing was turned up, no theft, no plausible motive arising out of his private life.

And perhaps that remained a factor in her painting, even if her new occupation gave her a more plausible motive.