Breakneck, abrupt, and alacritous are all synonyms for rapid. Slow and leisurely are antonyms of rapid. And here are 34 another word for rapid.
The adjective "rapid" has a variety of synonyms that differ in length. 1 synonym with 4 letters, 6 synonyms with 5 letters, 6 synonyms with 6 letters, 3 synonyms with 7 letters, 3 synonyms with 8 letters, 7 synonyms with 9 letters, 1 synonym with 10 letters, 3 synonyms with 11 letters, 1 synonym with 13 letters, and 1 synonym with 18 letters, for a total of 32 synonyms for rapid.
The rapid train quickly departed.
His rapid response surprised everyone.
Rapid winds shook the trees.
Rapid growth boosted the company.