undeveloped Antonyms

developed remodeled mutant rebuilt timeworn avant-garde ageing of age older age-old forward-looking spiked ripened ripe revolutionary revised repaired remade groundbreaking up-to-the-minute breakthrough highly evolved extremely old ahead of the times reorganised exploited renovated highly developed reorganized redux of a certain age multiskilled innovatory full-fledged futuristic higher modernised reformed refined evolved established enhanced elaborated doctored diversified corrected changed BIG avant augmented