TOEFL swiftness Definition The quality of being fast or rapid. 日本語 速さ、または速い Example "The swiftness of the ambulance saved the man's life." Sign in to save TOEFL PDF — $25 ← swift swill → Study tips featuring "swiftness" TOEFL Academic Vocabulary: Study by Topic 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