grow (to gradually become larger, develop, or mature): The economy is growing. Children grow quickly.
increase (to become or make larger in quantity, size, quality, or degree): The demand for solar panels continues to increase.
expand (to become or make larger in size, scope, or area): When water freezes, it expands.
enlarge (to make something physically larger): They plan to enlarge the kitchen.
extend (to make something larger in length or duration): We plan to extend the parking lot. I extended my visa for three months.
swell (to become larger or greater in amount or number): The city’s population has swelled.
augment (to make something greater by adding to it): I need to find a part-time job to augment my income.