understandable

from WordNet (r) 3.0 (2006)

understandable
    adj 1: capable of being apprehended or understood [syn:
           {apprehensible}, {intelligible}, {graspable},
           {perceivable}, {understandable}]

from The Collaborative International Dictionary of English v.0.48

Understandable \Un`der*stand"a*ble\
   ([u^]n`d[~e]r*st[a^]nd"[.a]*b'l), a.
   Capable of being understood; intelligible. --Chillingworth.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

34 Moby Thesaurus words for "understandable":
      appreciable, apprehensible, articulate, ascertainable, clear-cut,
      cognizable, comprehensible, conceivable, discernible, discoverable,
      distinguishable, easily understood, easy to understand, exoteric,
      fathomable, graspable, intelligible, knowable, lay, lucid,
      luminous, penetrable, perceptible, plain, plumbable, popular,
      prehensible, readable, recognizable, scrutable, seizable, simple,
      straightforward, unambiguous