agley

What a joy it is in a vexatious world, where things 'gang aft agley,' to find something absolutely right.

Burns tells us that “the well-laid schemes of mice and men gang aft agley.”

He didn't intend that any strange girl should throw all his plans agley, for she had done more than mischief enough already.

But, like the plans of the little field mouse of whom Robert Burns wrote, the best laid schemes "gang aft agley."

But "The best-laid schemes o' mice and men Gang aft agley," as the priest-governed schemers may find to their cost.