is it correct to use (word) + の逆? to express "the opposite of..."

Question

I was trying to come up with a way to say "the opposite of (word)" and since I already knew about 逆 in my head I thought it'd make sense to use a word + の逆 but I'm not 100% sure if that's correct. Ex: the opposite of short 短いの逆

Answer 1

I would usually use 「〇〇の反対」 to express the idea of 'the opposite of 〇〇'.

Looking at it another way, you can use the word 反対語 to mean antonym (e.g. if you are using an online thesaurus to search for the same).