with half an eye on (something/someone)

have/keep half an eye on (something/someone) - to watch something or someone without giving them all your attention.

I ate my lunch with half an eye on the clock to make sure I didn't miss my train.

• someone can't hold a candle to
• someone can't hold a candle to someone else
• someone can't hold a candle to something else
• someone could do something with eyes closed
• someone could do something with eyes shut
• someone could do something with their eyes closed
• someone could do something with their eyes shut
• someone couldn't care less
• someone could with eyes closed
• someone could with eyes shut
• someone could with their eyes closed
• someone could with their eyes shut
• someone, eat your heart out!
• someone from hell
• someone gets religion
• someone has got game
• someone has more bark than bite
• someone is at disposal
• someone is at your disposal
• someone is in business
• someone of a certain age
• someone par excellence
• someone's answer
• someone's answer someone
• someone's answer something