Comparative adjective: More delicious.
Herkullisempi is the comparative form of the adjective herkullinen which means ”delicious.” (The superlative form is herkullisin, which means ”most delicious.”)
Our example sign today, taken from a Kamppi tram stop, says Uusi, herkullisempi proteiinijuoma and means ”New, more delicious protein drink.”
The adjective herkullinen comes from herkku, a noun meaning ”delicacy,” plus the denominal suffix –llinen. The suffix –llinen can be used with nouns to form adjectives describing time, likeness or possession of the noun’s qualities. (The suffix can also be used to form new nouns which define persons by what they do or own, or nouns describing amounts.)
See also onnellinen which means ”happy” and comes from onni (fortune, luck or happiness) plus this same suffix, or aamullinnen, which comes from aamu (morning) plus this suffix and means ”in the morning.”)