DictionaryRoot: alacer
Latin
alacer
lively, cheerful, brisk
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adverb / noun / adjective
allegro
uh-LEG-roh/əˈleɡrəʊ/
Music played at a fast, lively tempo.
Etymology
The Latin ancestor describes cheerfulness and brisk energy. The musical direction applies that lively character to performance, calling for a fast, spirited tempo.