2
more complicated
1
time-consuming
11 years ago|0 views|share |citing 
APASmart Define. (2015). piece of cake thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/piece_of_cake/thesaurus/antonyms
ChicagoSmart Define. 2015. "piece of cake thesaurus" https://smartdefine.org/piece_of_cake/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, piece of cake thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/piece_of_cake/thesaurus/antonyms>.
MLASmart Define. "piece of cake thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/piece_of_cake/thesaurus/antonyms>