These actions are capable of evoking or leaving unpleasant feelings, ideas
Explanation:
A connotation here means the feelings that these actions create in addition to their true denotations.
A negative connotation can leave negative emotions and ideas for instance hesitations, filled pauses could be mistaken for fear, reluctance during conversations. Filled pauses could be because the speaker is thinking but this can be misinterpreted to be something else.