readableEnglishOxford American Thesaurusreadable adjective 1 the inscription is still perfectly readable: legible, easy to read, decipherable, easily deciphered, clear, intelligible, understandable, comprehensible, easy to understand. ▷antonyms illegible, indecipherable. 2 her novels are immensely readable: enjoyable, entertaining, interesting, absorbing, engaging, gripping, enthralling, engrossing, compulsive, stimulating; worth reading, well written; informal unputdownable. ▷antonyms boring, unreadable.