foremost
Foremost (adj) means Most important, prominent, or advanced; leading. Example: “She is the foremost expert in her field.”
How to use foremost
Learner’s notesIn plain EnglishThe most important or leading one — often used in the phrase "first and foremost."
Fill the gap
Can you complete this real example?
She is the _____ expert in her field.
Etymology
From Old English formest, meaning "earliest" or "most prominent," ultimately linked to the words for and first.