TOEFL IELTS countless Definition Too many to be counted; innumerable. 中文 数量太多无法计算；无数的。 Example "The stars in the night sky are countless." Sign in to save TOEFL PDF — $25 IELTS PDF — $25 ← countervail countries → Study tips featuring "countless" TOEFL Academic Vocabulary: Study by Topic Boost Your IELTS Writing With Precise Vocabulary Related words TOEFL brighten GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze