plantly adjective 1adverb 1forms 4 adjective1 •Of or pertaining to plants; botanical.Out of all the conversion rocks, only two of them require an added potion to make the effects stick—the pebble of plantly conversion and the pebble of godly conversion. — 2009 adverb1 •(nonstandard) In a plant-like manner. formsmore plantly · plantlier · most plantly · plantliest