[1] : The Collaborative International Dictionary of English v.0.48

sinful \sin"ful\, a. aas. synfull.
   tainted with, or full of, sin; wicked; iniquitous; criminal;
   unholy; as, sinful men; sinful thoughts. --piers plowman.
   1913 webster

         ah sinful nation, a people laden with iniquity. --isa.
                                                  i. 4.
   1913 webster -- sin"fully, adv. -- sin"fulness, n.
   1913 webster
see also:
sin"fully sin"fulness 

[2] : WordNet (r) 2.0

sinful
     adj 1: characterized by iniquity; wicked because it is believed to
            be a sin; "iniquitous deeds"; "he said it was sinful
            to wear lipstick"; "ungodly acts" syn: iniquitous,
            ungodly
     2: having committed unrighteous acts; "a sinful person" syn: unholy,
         wicked
see also:
iniquitous ungodly unholy wicked 

[3] : Moby Thesaurus II by Grady Ward, 1.0

107 moby thesaurus words for "sinful":
   aberrant, abnormal, abominable, amiss, arrant, atrocious, bad,
   base, black, blamable, blameful, blameworthy, censurable, corrupt,
   criminal, culpable, damnable, dark, delinquent, demonic, depraved,
   deviant, disgraceful, evil, evildoing, execrable, felonious,
   flagitious, flagrant, foul, godless, guilty, hardly the thing,
   heinous, ignominious, ill, illegal, immoral, impious, improper,
   inaccurate, inappropriate, inauspicious, incorrect, indecorous,
   inexpedient, infamous, inferior, iniquitous, invalid, irreligious,
   irreverent, knavish, low, malefactory, malevolent, malfeasant,
   monstrous, naughty, nefarious, not done, not the thing, off-base,
   off-color, out-of-line, peccant, profane, profligate, rank,
   reprehensible, reprobate, sacrilegious, scandalous, shameful,
   shameless, sinister, terrible, un-christly, unangelic, unchristian,
   undue, unfavorable, unfit, unfitting, unforgivable, ungodly,
   unhealthy, unholy, unkind, unlawful, unpardonable, unpleasant,
   unrighteous, unsaintly, unseemly, unskillful, unspeakable,
   unsuitable, untoward, unworthy, vicious, vile, villainous, wicked,
   wrong, wrongdoing, wrongful

Sinful >> S Words
Sinful, definition of term: Sinful
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