understandible

Adjective

understandable (comparative more understandable, superlative most understandable)

1. Capable of being understood; comprehensible.

   Synonyms:

   apprehensible

   Antonyms:

   incomprehensible, unfathomable

2. Capable of being accepted or excused under the circumstances; permissible.
   • The original branch was 5¾ miles long, from Llantrisant to Cowbridge only, but in 1889, the T.V.R. [Taff Vale Railway] obtained powers […] to continue the line for 6½ miles south to the coast at Aberthaw, ostensibly for the purpose of serving the important limestone works there, but one suspects...1951 December, T. B. Sands, “Some Railway Byways in the Vale of Glamorgan”, in Railway Magazine, page 838

   Synonyms:

   acceptable, excusable

   Antonyms:

   inexcusable, out of bounds, unacceptable