testifier

tes·ti·fy

[tes-tuh-fahy] verb, tes·ti·fied, tes·ti·fy·ing.
verb (used without object)
1.
to bear witness; give or afford evidence.
2.
Law. to give testimony under oath or solemn affirmation, usually in court.
3.
to make solemn declaration.
verb (used with object)
4.
to bear witness to; affirm as fact or truth; attest.
5.
to give or afford evidence of in any manner.
6.
Law. to state or declare under oath or affirmation, usually in court.
7.
to declare, profess, or acknowledge openly.
00:10
Testifier is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.

Origin:
1350–1400; Middle English testifyen < Latin testificārī to bear witness, equivalent to testi(s) witness + -ficārī -fy

tes·ti·fi·er, noun
pre·tes·ti·fy, verb (used with object), pre·tes·ti·fied, pre·tes·ti·fy·ing.
re·tes·ti·fy, verb, re·tes·ti·fied, re·tes·ti·fy·ing.
un·tes·ti·fy·ing, adjective


5. indicate, show, signify, prove.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
testify (ˈtɛstɪˌfaɪ) [Click for IPA pronunciation guide]
 
vb (when intr, often foll by to) , -fies, -fying, -fied
1.  (when tr, may take a clause as object) to state (something) formally as a declaration of fact: I testify that I know nothing about him
2.  law to declare or give (evidence) under oath, esp in court
3.  to be evidence (of); serve as witness (to): the money testified to his good faith
4.  (tr) to declare or acknowledge openly
 
[C14: from Latin testificārī, from testis witness]
 
testifi'cation
 
n
 
'testifier
 
n

testify (ˈtɛstɪˌfaɪ) [Click for IPA pronunciation guide]
 
vb (when intr, often foll by to) , -fies, -fying, -fied
1.  (when tr, may take a clause as object) to state (something) formally as a declaration of fact: I testify that I know nothing about him
2.  law to declare or give (evidence) under oath, esp in court
3.  to be evidence (of); serve as witness (to): the money testified to his good faith
4.  (tr) to declare or acknowledge openly
 
[C14: from Latin testificārī, from testis witness]
 
testifi'cation
 
n
 
'testifier
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

testify
late 14c., "to serve as evidence of," from L. testificari "bear witness," from testis "witness" (see testament) + root of facere "to make" (see factitious). Biblical sense of "openly profess one's faith and devotion" is attested from 1520s.
Online Etymology Dictionary, © 2010 Douglas Harper
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