worry

(noun) something or someone that causes anxiety; a source of unhappiness. Synonyms: concern, headache, vexation. Examples: "New york traffic is a constant concern." "It's a major worry."

(noun) a strong feeling of anxiety. Synonyms: trouble. Examples: "His worry over the prospect of being fired." "It is not work but worry that kills." "He wanted to die and end his troubles."

(verb) be worried, concerned, anxious, troubled, or uneasy. Examples: "I worry about my job."

(verb) be concerned with. Synonyms: care. Examples: "I worry about my grades."

(verb) disturb the peace of mind of; afflict with mental agitation or distress. Synonyms: vex. Examples: "I cannot sleep--my daughter's health is worrying me."

(verb) be on the mind of. Synonyms: concern, interest, occupy. Examples: "I worry about the second germanic consonant shift."

(verb) lacerate by biting. Examples: "The dog worried his bone."

(verb) touch or rub constantly. Examples: "The old man worried his beads."