Smack of
Definition 1 of 2
Pro Tip 1/3Subtle Implication
The phrase often indicates a subtle, almost hidden quality that's not directly stated. 
Her tone smacked of sarcasm, though she didn’t say anything directly sarcastic.
Pro Tip 2/3Negative Connotation
'Smack of' can imply a negative impression without openly stating it. 
The policy change smacked of cost-cutting at the expense of quality.
Pro Tip 3/3Slight Perception
Use 'smack of' when the characteristic is mildly perceived or felt, not overt. 
The decorated veteran’s speech smacked of humility.