1. Copious
Much available in supply or quantity; plenty.

Mia took such copious notes that her notebook looked like War and Peace, Part II.
Mnemonic: Copious → piles of copies → so many copies = a lot.
2. Sporadic
Happening once in a while, not regular; scattered or irregular.

Tom’s gym visits were so sporadic that the treadmill started asking, ‘Do I know you?’
Mnemonic: Sporadic = sports practice that happens randomly.
3. Transpose
Switching places or changing order; rearrange.

When asked to transpose the rows and columns, Ryan ended up turning the spreadsheet into modern art.
Mnemonic: Transpose = change position.
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4. Lament
Feeling sad and crying over something; express sorrow or regret.

Ethan lamented the day he traded his Xbox for a skateboard that broke in five minutes.
Mnemonic: Lament = cry over lost moments.
5. Entail
Something that must happen as part of something else; involve or require.

Winning the tournament entailed waking up at 5 a.m. which almost ended his career before it started.
Mnemonic: A tail is essential → entail = essential requirement*.*
6. Momentous
Very important, big, or special; significant.

Graduation was so momentous that even the class clown wore a tie.
Mnemonic: A big moment = momentous.
7. Pristine
Completely clean, fresh, or pure; unspoiled.

The kitchen looked pristine until Jake cooked spaghetti and turned it into a crime scene.
Mnemonic: Pristine = pure and clean.
8. Constrict
To make something tighter or smaller; squeeze or shrink.

The snake constricted around the branch like it was auditioning for yoga class.
Mnemonic: Constrict = tighten, like a tight constrictor snake.
9. Nebulous
Not clear, cloudy, or vague; hazy.

His excuse for missing homework was so nebulous that even he forgot what he said.
Mnemonic: Nebula in space = cloudy, unclear.
10. Buttress
Something that supports or strengthens; a support.

The coach’s pep talk was the buttress that kept the tired team standing.
Mnemonic: Buttress = butt + rest = supports you when tired.
11. Refute
To prove something wrong; disprove.

Sarah refuted the rumor by showing a selfie of herself at home during the party.
Mnemonic: Rebut with proof = refute.
12. Corroborate
To support something with more evidence; confirm.

The witness corroborated his story, though she added that he also stole the last donut.
Mnemonic: Co-op evidence = corroborate.
13. Scrupulous
Very careful about doing what is right, extremely attentive to detail; precise.

Tim was so scrupulous he counted every chip in the bag to check if Lay’s cheated him.
Mnemonic: Scrupulous = careful + honest.
14. Vindicate
To clear someone from blame or suspicion; justify.

The video vindicated Alex, proving he didn’t eat the teacher’s sandwich - it was the janitor.
Mnemonic: Win the case = vindicate.
15. Preclude
To stop something from happening; prevent.

Heavy rain precluded the soccer match, so they played Mario Kart instead.
Mnemonic: Pre-close = preclude.
16. Repudiate
To reject or refuse to accept; deny.

Jake repudiated the idea of washing dishes, claiming he was allergic to soap.
Mnemonic: Reject publicly = repudiate.
17. Mitigate
To make less severe; reduce or ease.

The city planted more trees to mitigate the effects of air pollution.
Mnemonic: Mitigate = make it less.
18. Outsized
Much bigger than normal; unusually large.

He wore an outsized hat that looked like it could double as an umbrella.
Mnemonic: Outside normal size = outsized.
19. Palpable
So clear or obvious you can almost touch it; noticeable.

The tension in the room was so palpable that you could almost feel it in the air.
Mnemonic: Palp = feel → palpable = feelable.
20. Evince
To show or reveal clearly; demonstrate.

Her face evinced pure joy when she saw the pizza delivery guy.
Mnemonic: Evidence shows = evince.
21. Overlooked
Missed or failed to notice; ignored.

He overlooked the fact that the test was today even though it was written on his forehead in marker.
Mnemonic: Looked over = missed it.
22. Accentuate
To make something stand out; emphasize.

Wearing neon socks accentuated his dance moves in the talent show.
Mnemonic: Accent = stress → accentuate = highlight.
23. Counteract
To act against something; neutralize.

He counteracted the spicy curry by drinking a gallon of milk.
Mnemonic: Counter move = counteract.
24. Insuperable
Impossible to overcome; unbeatable.

The video game boss seemed insuperable until Emma found the secret ‘easy mode.’
Mnemonic: Not possible = insuperable.
25. Irreproachable
Completely blameless, perfect; beyond criticism.

Her chocolate cake was so good it was irreproachable - even Gordon Ramsay couldn’t yell at it.
Mnemonic: No reproach = irreproachable.