be\ on\ to

be\ on\ to
v. phr.
To understand the motives of someone; not be deceived.

Jack keeps telling us how wealthy his family is, but we are on to him.

Словарь американских идиом. — СПб., Изд-во "Лань". . 1997.

Игры ⚽ Нужно сделать НИР?

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