Make the antonym by adding the prefix with "Adequate"?

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Make the antonym by adding the prefix with "Adequate"? Answer: in

The prefix "in-" is added to "adequate" to form its antonym "inadequate", which means not sufficient or not enough.

Question context

This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.