1. Definition: 1. (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors

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1. Definition: 1. smelling of fermentation or staleness

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1. Definition: 1. a decoy who acts as an enthusiastic customer in order to stimulate the participation of others

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1. Definition: 1. grow worse; "Conditions in the slum worsened"

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1. Definition: 1. annoy continually or chronically;

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1. Definition: 1. put (an image) into focus; "Please focus the image; we cannot enjoy the movie"

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1. Definition: 1. a person who leads (especially in illicit activities)

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1. Definition: 1. a secret agent who incites suspected persons to commit illegal acts

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1. Definition: 1. someone who deliberately stirs up trouble

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