Gargantuan means enormous beyond ordinary measure. A gargantuan appetite, gargantuan task, gargantuan portions.
It suits appetite and quantity better than height, which is a trace of where it came from: Gargantua is the giant in Rabelais with the vast appetite, and his name comes from a word for throat. It is one of the small set of English adjectives made from a character's name.
1adjectivegargantuanEnormous beyond ordinary measure.
“He ordered a gargantuan burger that was taller than his glass.”
gargantuan is a quality of enormity.
From Gargantua, the giant in Rabelais, whose name comes from a Spanish and Portuguese word for throat.
Spanish
garganta — throat
French
Gargantua
English, today
gargantuan
From French Gargantua, a giant with a very large appetite in Rabelais's The Inestimable Life of Gargantua. Rabelais derived Gargantua from the Portuguese and Spanish garganta (“throat”).
Etymology from Wiktionary, CC BY-SA