Third person singular present tense of advise; gives counsel, recommendations, or guidance to someone.
From Old French 'aviser' meaning to consider or give opinion, ultimately from Latin 'ad-' (to) + 'videre' (to see). The spelling with 's' (not 'z') in the verb form helps distinguish it from the noun 'advice'.
The word pair 'advise/advice' is a classic example of how English uses different spellings to distinguish verbs from nouns - 'advise' with 's' is the verb, while 'advice' with 'c' is the noun. This pattern appears in several English word pairs like 'practice/practise' in British English.
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