1. to love, admire, or respect someone or something very much, often excessively
Usage: British spelling; American spelling is 'idolize'; transitive verb
2. to make an idol of; to treat or regard as an idol
Usage: British spelling; American spelling is 'idolize'; transitive verb; less common than sense 1

Examples

• Many teenagers idolise their favourite pop stars.
• She has idolised her older sister since childhood.
• The fans idolise the football player for his skill and dedication.
• He idolises his grandfather and wants to follow in his footsteps.
• Young people often idolise celebrities they see on social media.
• The ancient Greeks idolised their gods through statues and temples.