augment
v.v. to make something larger, stronger, or better by adding something to it.
v. to increase the size, amount, or value of something by adding to it. Transitive; requires a direct object.
He took a second job to augment his income.
The company decided to augment its existing staff with several freelance consultants to meet the project deadline.
The architect proposed using glass panels to augment the natural light in the gallery, thereby reducing the building's overall energy consumption.
From Middle English augmenten, from Middle French augmenter, from Old French augmenter, from Late Latin augmentare (“to increase”), from Latin augmentum (“an increase, growth”), from augere (“to increase”).
The verb is transitive and typically takes a noun phrase as a direct object.