
Fill up on
Caution with Meals
Avoid using 'fill up on' when describing eating a meal. It usually implies eating only a part of a meal or snack.
I filled up on appetizers and had no room for the main course.
Avoid Overeating
'Fill up on' can carry a negative connotation, suggesting excess or lack of self-control in eating.
She advised her kids not to fill up on sweets at the party.
Casual Contexts
Best used in informal or casual situations, not in formal writing or speeches.
At the picnic, we all filled up on grandma's homemade cookies.