worry

Be on the mind of.

“I worry about the second Germanic consonant shift”

Be concerned with.

“I worry about my grades”

Disturb the peace of mind of; afflict with mental agitation or distress.

“I cannot sleep--my daughter's health is worrying me”

Be worried, concerned, anxious, troubled, or uneasy.

“I worry about my job”

Lacerate by biting.

Touch or rub constantly.

Something or someone that causes anxiety; a source of unhappiness.

“it's a major worry”

A strong feeling of anxiety.

“his worry over the prospect of being fired”

“it is not work but worry that kills”