On Tue, 3 Feb 2015 12:52:08 -0800 Leo Moser <[log in to unmask]> wrote: > Adverbs are rather commonly formed from adjectives. > Both are descriptives of a sort. > > Some languages use plain adjectives for what we might call > adverbials. English does this sometimes. > > These I think of as "secondary adjectives" -- maybe there is a better > term. Are such things needed in conlangs? Not really. Adverbs of manner, like "slowly" or "often" are rather rare in the world's languages. Some just use the adjective, a common enough strategy in European languages. Some use the case form of a noun, others use a verb: She worked carefully. *She worked careful. She worked with care. *She worked being-careful, *she was-careful working. Even locative and temporal adjectives are not indispensable: "here" = "at this place".