1. In an unconvincing manner
   "he argued unconvincingly"

See also: unconvincing

Antonym: convincingly

• overextend
• overfamiliar
• overfamiliarity
• overfatigue
• overfed
• overfeed
• overfeeding
• overfill
• overfish
• overflight
• overflow
• overflow incontinence
• overflowing
• overfly
• overfond
• overfull
• overgarment
• overgeneralise
• overgeneralize
• overgenerous
• overglaze
• overgorge
• overgraze
• overgreedy
• overground