valâ²idÂ·ly adv. Synonyms: valid, sound2, cogent, convincing. These adjectives describe assertions, arguments, conclusions, reasons, or intellectual processes that are persuasive because they are well founded. What is valid is based on or borne out by truth or fact or has legal force: a valid excuse; a valid claim. What is sound is free from logical flaws or is based on valid reasoning: a sound theory; sound principles. Something cogent is both sound and compelling: cogent testimony; a cogent explanation.
Felicia /fe-li-cia/ [3 sylls.] as a girls' name is pronounced feh-LEE-shah. It is of Latin origin, and the meaning of Felicia is lucky, fortunate, happy. Feminine of Felix, of medieval origin. Actress Phylicia Rashad.
Felicia means lucky, fortunate, and happy girl in latin. Feminine form of Felix. The name Felicia derives from the Latin adjective felix, meaning happy, though in the neuter plural form felicia it literally means happy things and often occurred in the phrase tempora felicia, happy times. The sense of it as a feminine personal name appeared in post-Classical use and is of uncertain origin.