unprecedented
UK/,ʌn'presidəntid/US/.ʌn'presidentid/
TOEFLGREB2
Definitions
adj.
Never having happened or existed before
史无前例的，空前的
Root Breakdown
Root-derivedun-not, reversal
+
pre-before
+
-entperforming, being in a state
+
-edpast tense / completed
=unprecedented
un- (not) + precedent (a case that went before) + -ed = "having no precedent" — nothing has gone before it. A high-frequency derivative of precede / precedent.
Root ced still carries 90 more wordsCommon Collocations
- 1.unprecedented scale空前的规模
- 2.unprecedented level前所未有的程度
- 3.unprecedented growth空前的增长
- 4.on an unprecedented scale以空前的规模
Example Sentences
- 1.
The pandemic caused unprecedented disruption worldwide.
- 2.
The company saw unprecedented growth last year.