aggravate

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To make worse or more troublesome.
2. v. To rouse to exasperation or anger; provoke. See Synonyms at annoy.

Century Dictionary and Cyclopedia

1. Literally, to add weight to or upon; increase the amount, quantity, or force of; make heavier by added quantity or burden.
2. To make more grave or heavy; increase the weight or pressure of; intensify, as anything evil, disorderly, or troublesome: as, to aggravate guilt or crime, the evils or annoyances of life, etc.
3. To exaggerate; give coloring to in description; give an exaggerated representation of: as, to aggravate circumstances.
4. To provoke; irritate; tease.
5. Synonyms To heighten, raise, increase, magnify; overstate. See list under exaggerate.

Wiktionary

1. v. To make worse, or more severe; to render less tolerable or less excusable; to make more offensive; to enhance; to intensify.
2. v. To give coloring to in description; to exaggerate; as, to aggravate circumstances. — William Paley.
3. v. To exasperate; to provoke; to irritate.

GNU Webster's 1913

1. v. To make heavy or heavier; to add to; to increase.
2. v. To make worse, or more severe; to render less tolerable or less excusable; to make more offensive; to enhance; to intensify.
3. v. To give coloring to in description; to exaggerate.
4. v. To exasperate; to provoke; to irritate.

WordNet 3.0

1. v. make worse
2. v. exasperate or irritate