Choose the word which best expresses the meaning of the given word.
$STRINGENT$

Pick the word that is most nearly the same in meaning as the highlighted word.
The soldier displayed $exceptional$ courage and saved the Major from the enemy's hands.

Pick the word that is most nearly the same in meaning as the highlighted word.
The time $I$ spent in the library was a most $rewarding$ one.

Choose the word which best expresses the meaning of the given word.
$INSOMNIA$

Choose the word which best expresses the meaning of the given word.
$INFREQUENT$

Choose the word which best expresses the meaning of the given word: $Chimera$.