sightful

From sight +‎ -ful.

sightful (comparative more sightful, superlative most sightful)

1. (obsolete) Easily or clearly seen; distinctly visible; perspicuous
   • 1594, Richard Carew, The Examination of Men's Wits:

     for sadness and affliction not only diminisheth and consumeth the moisture of the brain, but also drieth up the bones, with which quality the understanding groweth more sharp and sightful.

2. Having full sight; clear-sighted; perspicacious and discerning; observant
   • 2008, NW Progressive Blog‎:

     While polling trends can be interesting and even sightful, again, the only meaningful poll is on Election Day

• sightfully
• sightfulness

• “sightful”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• Century Dictionary and Cyclopedia, sightful