Keep+close
111keep your eye on the ball — If you keep your eye on the ball, you stay alert and pay close attention to what is happening. (Dorking School Dictionary) …
112keep your distance — do not come too close, respect a person s space Keep your distance or she ll accuse you of harassment …
113Keep your eye on the ball — If you keep your eye on the ball, you stay alert and pay close attention to what is happening …
114keep a tab on (to) — Watch carefully. ► “Snacks are a big market: they contribute 70% of Nabisco’s nearly $8 billion in annual revenues. This means that Nabisco must keep a close eye on its competitors.” (Forbes, Aug. 28, 1995, p. 102) …
115keep at arm's length — avoid intimacy or close contact with. → arm …
116close-mouthed — adjective not willing to say much because you are trying to keep a secret …
117close-mouthed — UK [ˌkləʊs ˈmaʊθd] / US [ˌkloʊsˈmaʊθd] adjective not saying anything about a subject because you want to keep it secret …
118keep someone/something at arm's length — avoid intimacy or close contact with someone or something …
119play (your) cards close to (your) chest — keep/play (your) cards close to (your) chest to not tell anyone what you plan to do. I never know what Martin s next move will be. He plays his cards close to his chest …
120play close to the chest — Keep one’s thoughts or plans secret. ► “Current Yield: As the FED Plays It Close to the Vest, the Market Moves as If It’s Got a Handful of Aces.” (Barron’s, Aug. 28, 1995, p. MW10) …