-eg-

-eg- is the opposite number of -et-: it blows the root up. granda gives grandega, varma gives varmega, bona gives bonega, pordo gives pordego. As with -et-, the ending of the root survives, so an adjective stays an adjective and ridi becomes ridegi, to roar with laughter.

Watch the intensity, not just the size. On a quality root -eg- means extremely rather than physically large, which is why bonega is excellent and varmega is boiling. And read new words with care before you assume the suffix is there: legi, regi and kolego are single roots, and pordego is a gate, not merely a big door you could still call granda pordo.