Wellhardened

hardened

[hahr-dnd]
adjective
1.
made or become hard or harder.
2.
pitiless; unfeeling.
3.
firmly established or unlikely to change; inveterate: a hardened criminal.
4.
inured; toughened: a hardened trooper.
5.
rigid; unyielding: a hardened attitude.
6.
(of a missile base) equipped to launch missiles from underground silos.
7.
(of a missile) capable of being launched from an underground silo.

Origin:
1325–75; Middle English; see harden, -ed2

semihardened, adjective
unhardened, adjective
well-hardened, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
hardened (ˈhɑːdənd)
 
adj
1.  rigidly set, as in a mode of behaviour
2.  toughened, as by custom; seasoned
3.  (of a nuclear missile site) constructed to withstand a nuclear attack

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