Search Result for "unmercifulness": 
Wordnet 3.0

NOUN (1)

1. inhumaneness evidenced by an unwillingness to be kind or forgiving;
[syn: mercilessness, unmercifulness]

perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_TIME = "tr_TR.UTF-8",
	LC_MONETARY = "tr_TR.UTF-8",
	LC_ADDRESS = "tr_TR.UTF-8",
	LC_TELEPHONE = "tr_TR.UTF-8",
	LC_NAME = "tr_TR.UTF-8",
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	LC_IDENTIFICATION = "tr_TR.UTF-8",
	LC_NUMERIC = "tr_TR.UTF-8",
	LC_PAPER = "tr_TR.UTF-8",
	LANG = "C"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
2 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Unmerciful \Un*mer"ci*ful\, a. Not merciful; indisposed to mercy or grace; cruel; inhuman; merciless; unkind. -- Un*mer"ci*ful*ly, adv. -- Un*mer"ci*ful*ness, n. [1913 Webster]
WordNet (r) 3.0 (2006):

unmercifulness n 1: inhumaneness evidenced by an unwillingness to be kind or forgiving [syn: mercilessness, unmercifulness] [ant: mercifulness, mercy]