Use 'signally' to stress someone's positive, noticeable influence in a situation.

Positive Impact

Implies an action or result is exceptionally good or successful, beyond what's usual.

Remarkable Degree

'Signally' can highlight the extent of contribution or effect when it's significant.

Use 'signally' to emphasize a major failure or deficiency in an expectation.

It indicates that the failure is not only obvious but strikingly below desired standards.

'Signally' can suggest that the failure had significant negative consequences.