Báo cho biết

to warn someone of a danger

báo cho người nào biết trước một sự nguy hiểm

to warn the police

báo công an

Cảnh cáo, răn

to warn somebody against something

cảnh cáo ai không được làm điều gì

báo trước

báo hiệu

lưu ý

máy báo hiệu

Caution, admonish, advise, notify, apprise, inform, give(fair) warning, alert, give (prior) notice, put (someone) onnotice or on guard or on the alert, make (someone) aware (of),forewarn, tip off, Rare premonish: The entire population hasbeen warned about the imminent hurricane.

Advise, counsel,caution: You did warn me against investing in llama farms.

(also absol.) a (often foll. by of, or that + clause,or to + infin.) inform of danger, unknown circumstances, etc.(warned them of the danger; warned her that she was beingwatched; warned him to expect a visit). b (often foll. byagainst) inform (a person etc.) about a specific danger, hostileperson, etc. (warned her against trusting him).

(usu. withneg.) admonish; tell forcefully (has been warned not to go).

Give (a person) cautionary notice regarding conduct etc. (shallnot warn you again).

Prohibit from attending races, esp. at a specifiedcourse.

Warner n. [OE war(e)nian, wearnian ult. f. Gmc: cf.WARE(3)]