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

venial \ve"nial\, a. of. venial, f. v'eniel, l. venialis,
   from venia forgiveness, pardon, grace, favor, kindness; akin
   to venerari to venerate. see venerate.
   1. capable of being forgiven; not heinous; excusable;
      pardonable; as, a venial fault or transgression.
      1913 webster

            so they do nothing, 't is a venial slip. --shak.
      1913 webster

   2. allowed; permitted. obs. "permitting him the while
      venial discourse unblamed." --milton.
      1913 webster

   venial sin r. c. theol., a sin which weakens, but does
      not wholly destroy, sanctifying grace, as do mortal, or
      deadly, sins.
      1913 webster -- ve"nially, adv. -- ve"nialness,
      n. --bp. hall.
      1913 webster
see also:
venerate venial sin ve"nially ve"nialness 

[2] : WordNet (r) 2.0

venial
     adj 1: warranting only temporal punishment; "venial sin" syn: minor
     2: easily excused or forgiven; "a venial error" syn: excusable,
         forgivable
see also:
minor excusable forgivable 

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

27 moby thesaurus words for "venial":
   admissible, allowable, condonable, defensible, dispensable,
   excusable, exemptible, expiable, forgivable, harmless, inoffensive,
   insignificant, justifiable, legitimate, minor, pardonable, petty,
   reasonable, remissible, tolerable, tolerated, trifling, trivial,
   unimportant, unobjectionable, vindicable, warrantable

Venial >> V Words
Venial, definition of term: Venial
venial_pag1.html

Venial Sin >> V Words
Venial Sin, definition of term: Venial Sin
venial+sin_pag1.html