Best answers for Keep under observation – Crossword Clue

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. the act of looking or seeing or observing; "he tried to get a better view of it"; "his survey of the battlefield was limited"

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1. Definition: 1. explore, often with the goal of finding something or somebody

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1. Definition: 1. the period during which someone (especially a guard) is on duty

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1. Definition: 1. a long fixed look; "he fixed his paternal gaze on me"

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