Power Thesaurus. 1969. gibberish thesaurus http://www.powerthesaurus.org/gibberish/antonyms (accessed April 15, 2017).
grav & gravi. These ROOT-WORDS are GRAV, GRAVI & GRAVITO meaning HEAVY & WEIGHTY. It comes from the Latin gravis which means HEAVY. It is also necessary to avoid confusion with words that are based on the Root GRAVEL meaning PEBBLY GROUND. You will have a weighty decision to make when you encounter words with GRAV in them; your dictionary will help you! 1. Grave : GRAV e (grave) adj.
1. a seed, especially of a cereal plant. 2. the smallest unit in the apothecaries' and avoirdupois systems, equal to 0.065 of a gram; abbreviated gr. Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition.