implacableness

im·plac·a·ble

[im-plak-uh-buhl, -pley-kuh-]
adjective
not to be appeased, mollified, or pacified; inexorable: an implacable enemy.

Origin:
1375–1425; late Middle English < Latin implācābilis. See im-2, placable

im·plac·a·bil·i·ty, im·plac·a·ble·ness, noun
im·plac·a·bly, adverb


unappeasable, unbending, merciless. See inflexible.
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World English Dictionary
implacable (ɪmˈplækəbəl) [Click for IPA pronunciation guide]
 
adj
1.  incapable of being placated or pacified; unappeasable
2.  inflexible; intractable
 
implaca'bility
 
n
 
im'placableness
 
n
 
im'placably
 
adv

00:10
Implacableness is always a great word to know.
So is ninnyhammer. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a fool or simpleton; ninny.
implacable (ɪmˈplækəbəl) [Click for IPA pronunciation guide]
 
adj
1.  incapable of being placated or pacified; unappeasable
2.  inflexible; intractable
 
implaca'bility
 
n
 
im'placableness
 
n
 
im'placably
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

implacable
1522, from O.Fr. implacable, from L. implacabilis "unappeasable," from in- "not" + placabilis "easily appeased" (see placate).
Online Etymology Dictionary, © 2010 Douglas Harper
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