1. Serving to certify or endorse authoritatively

See also: certify, supportive

• foxtail orchid
• foxtrot
• foxy
• foy
• foyer
• FPD
• fps
• Fr
• Fra
• Fra Filippo Lippi
• frabjous
• fracas
• fractal
• fractal dimension
• fractal geometry
• fraction
• fractional
• fractional currency
• fractional distillation
• fractional monetary unit
• fractional process
• fractionally
• fractionate
• fractionation
• fractious