TOEFL IELTS primary Definition Of chief importance; first in order, time, or development. Example "Clean water is a primary necessity for survival." Sign in to save TOEFL PDF — $25 IELTS PDF — $25 ← primal primate → Study tips featuring "primary" 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