GIGAN'TIC, adjective [Latin giganticus.] Of extraordinary size; very large; huge; like a giant. A man of gigantic stature. 1. Enormous; very great or mighty; as gigantic deeds; gigantic wickedness. Gigantical and gigantine, for gigantic rarely or never used.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI