robustest
ro-bus-test
adjective
Possessing the greatest strength, health, or sturdiness among a group.
"This ancient tree is the robustest in the woodland."
Thesaurus
Synonyms: rich, full-bodied, tasty, racy, robust, unrefined, iron, square-shouldered, stout, beefy, big-chested, cast-iron
Antonyms: frail