WordReference Random House Learner's Dictionary of American English © 2015
yum•my /ˈyʌmi/USA pronunciation adj., -mi•er, -mi•est.

    Informal Termsvery pleasing to the senses, esp. to the taste;

Collins Concise English Dictionary © HarperCollins Publishers::

yummy /ˈjʌmɪ/ slang interj
  1. Also: yum-yum an exclamation indicating pleasure or delight, as in anticipation of delicious food
adj ( -mier, -miest)
  1. delicious, delightful, or attractive
Etymology: 20th Century: from yum-yum, of imitative origin

'yummy' also found in these entries:

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