From Longman Dictionary of Contemporary Englishunsweetenedun‧sweet‧ened /ʌnˈswiːtnd/ adjective unsweetened food or drink has not had sugar added to it
Examples from the Corpus
unsweetened• unsweetened chocolate• After a few weeks on an unsweetened diet, it is remarkable how disgusting anything sugary tastes.• Grape, apple, unsweetened orange, grapefruit, pineapple, or exotic fruit juices may be drunk in moderation.• Sitting in the booth, he stirred his unsweetened tea as if it were poison.• Serve warm or cold with unsweetened whipped cream. 