To give advice to; to offer an opinion to, as worthy or expedient to be followed.
"The doctor advised him to rest and avoid heavy lifting while his leg heals."
In plain English: To advise means to give someone your opinion on what they should do.
"My teacher advised me to study harder for the final exam."
Usage: Use advise with the object you are giving counsel to, such as advising someone on their career path. Do not confuse this verb with its noun form, advice, which never takes a plural 's' and is often used without an article in phrases like "take good advice."
The word advise comes from the Old French aviser, which originally meant "to perceive" or "consider." It traveled into Middle English as avisen before evolving to its current sense of giving information or guidance.