BOTHER

Take the trouble to do something; concern oneself

Example: "He did not trouble to call his mother on her birthday"

Cause annoyance in; disturb, especially by minor irritations

Example: "Mosquitoes buzzing in my ear really bothers me"

To cause inconvenience or discomfort to

Example: "Sorry to trouble you, but..."

Intrude or enter uninvited

Example: "Don't bother the professor while she is grading term papers"

Make nervous or agitated

Example: "The mere thought of her bothered him and made his heart beat faster"

Make confused or perplexed or puzzled