COGITABLE
cogitable, ponderable
(adjective) capable of being thought about; “space flight to other galaxies becomes more cogitable”
Source: WordNet® 3.1
Etymology
Adjective
cogitable (comparative more cogitable, superlative most cogitable)
thinkable, conceivable, able to be imagined.
Antonyms
• incogitable
• inconceivable
• unthinkable
Source: Wiktionary
Cog"i*ta*ble, a. Etym: [L. cogitabilis, fr. cogitare to think.]
Definition: Capable of being brought before the mind as a throught or idea;
conceivable; thinkable.
Creation is cogitable by us only as a putting forth of divine power.
Sir W. Hamilton.
Source: Webster’s Unabridged Dictionary 1913 Edition