1. Of or relating to a geological eon (longer than an era)
   - eonian [N. Amer] 
2. Continuing forever or indefinitely
   - ageless, eonian [N. Amer], eternal, everlasting, perpetual, unending, unceasing

See also: aeon, lasting, permanent

• fucking
• fucking hell
• fuckup
• fuckwit
• fucoid
• fucoid algae
• fucus
• Fucus serratus
• Fucus vesiculosus
• fud
• fuddle
• fuddled
• fuddy-duddy
• fudge
• fudge factor
• fudge sauce
• fudge together
• Fuego
• fuel
• fuel cell
• fuel consumption rate
• fuel filter
• fuel gauge
• fuel indicator
• fuel injection