guru
The Spanish word 'gurú' is translated into English as 'Guru'. Originally a Sanskrit term, it is used to denote an expert or master in a specific field or a spiritual teacher. This term has been globally accepted and is often used to denote someone who has vast knowledge or expertise in a particular subject or field.
He is the programming guru.
This sentence is implying that the person referred to is extremely proficient and knowledgeable in programming, thereby earning the title of 'guru'.
I need advice from a finance guru.
Here the speaker is expressing a need for advice on finaces from someone who is a highly regarded expert or 'guru' in the field of finance.
She became a fashion guru.
This statement means that she has gained a lot of knowledge and expertise in fashion and is considered a 'guru' or leader in this field.