Tell against
Definition 1 of 1
Pro Tip 1/3Negative Implication
Used to describe something that may negatively influence a situation or perception. 
His confrontational attitude could tell against the team's harmony.
Pro Tip 2/3Subtle Influence
Highlights a minor detail or factor that nonetheless has a considerable impact. 
The weather might tell against the success of the outdoor event.
Pro Tip 3/3Impacts Opportunities
Often used when discussing elements that could affect someone's chances in a competitive situation. 
Her outspoken opinions could tell against her during the job interview.