heightens

"The school's fundraising project aims to renovate the library in several stages. "

"The doctor told me elevating my legs would help reduce the swelling."

"Russia is a large country.   The fruit-fly has large eyes for its body size.   He has a large collection of stamps."

"an advance in health or knowledge"

"The speaker's strong closing argument heightened the tension in the courtroom. "

"The augment, "e-," before the verb "wrote" in the sentence indicates that the action happened in the past. "

"a big strong man; Jake was tall and strong"

"The balloon rose high in the sky.   The wall was high.   a high mountain"

"The increase in homework assignments this week was significant. "

"a successful use of medicine;  a successful experiment;  a successful enterprise"

"The teacher's voice was intense as she explained the difficult math problem. "

"The teacher had high expectations for her students' test scores. "