Select the most appropriate ANTONYM of the underlined word.
"The repetitive and monotonous task of data entry made the work seem incredibly long and tedious."

The word "monotonous" means dull, tedious, and repetitious; lacking in variety and interest.
* Interesting means arousing curiosity or interest; holding effort and attention, which is the exact opposite of monotonous.
* Pious: Deeply religious.
* Threatening: Having a hostile or deliberately frightening quality.
* Precarious: Not securely held or in position; dangerously likely to fall or collapse.