Here are ten challenging vocabulary words for the SAT, along with their definitions. Remember to practice using them in a sentence to be able to use them effectively. Check back for more each week.
1. Ephemeral: lasting for a very short time; transient. Example: The beauty of cherry blossoms is ephemeral; they bloom for only a few weeks each year.
2. Capricious: unpredictable, impulsive:  subject to sudden mood changes. Example: The weather in the mountains can be capricious, with sunny skies one moment and heavy rain the next.
3. Avarice: extreme greed for wealth or material gain. Example: The corrupt politician’s avarice led to embezzlement of public funds.
4. Opulent: exhibiting great wealth and luxury; lavish. Example: The opulent mansion was adorned with expensive artwork and gold-plated fixtures.
5. Pervasive: spreading widely throughout an area or a group of people; prevalent. Example: The pervasive influence of social media has transformed how we communicate and interact.
6. Vexatious: causing annoyance, frustration, or distress. Example: The constant buzzing of mosquitoes can be vexatious during a summer camping trip.
7. Bellicose: inclined to start quarrels or engage in war; aggressive. Example: The bellicose dictator threatened neighboring countries with military action.
8. Ubiquitous: present, appearing, or found everywhere. Example: Mobile phones have become ubiquitous in today’s society, with almost everyone owning one.
9. Alacrity: brisk and cheerful readiness; eagerness. Example: The student accepted the challenging assignment with alacrity, eager to demonstrate their skills.
10. Esoteric: intended for or understood by only a small number of people with specialized knowledge; obscure. Example: The physics professor’s lecture was filled with esoteric concepts only advanced students could grasp.