Puerile
juvenile, immature adjective
The kid was very puerile when stomping during a funeral for attention
Hackneyed
unoriginal or overused adjective
vocal stims become very hackneyed when everyone starts to say them
Quixotic
exceedingly idealistic to the point of being impractical adjective
The boy's foolishly quixotic idea of cheating was shut down after the teacher monitored over him during the test.
Buttress
to support, hold up verb
The walls buttressed the roof in the home.
Piece de resistance
best or most important part noun
although math is fun, english was the real piece de resistance
Subjugate
to conquer or bring under total control
The babysitter subjugated the kids by bribing them with treats.
Underscore
emphasize or stress verb
The essay underscores the importance of sleep for positive memory performance
predilection
A natural liking, special preference, or bias in favor of something noun
The teacher has a predilection and favoritism towards classical novels.
Ambiguous
open to more interpretation- adjective
Due to the ambiguous nature of the question, it was difficult to choose the right answer.