testimonial
B1CEFR level
35/100Rarity: fairly common
TechnicalRegister
Law adjective
Relating to or consisting of evidence given orally by a witness.
The case rested on testimonial evidence unsupported by any documents or forensics.
Business noun
A written or spoken endorsement of a product from a satisfied customer.
A single testimonial from a marquee logo did more for conversion than a month of ads.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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