erect, straight, perpendicular; see upright 1, vertical.
fathom, explore, search; see measure 1.
"plumb." YourDictionary, n.d. Web. 17 October 2018. <http://thesaurus.yourdictionary.com/Plumb>.
plumb. (n.d.). Retrieved October 17th, 2018, from http://thesaurus.yourdictionary.com/Plumb
At right angles to the horizon or to level ground:
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.