1. Highly significant or important especially bringing about or marking the beginning of a new development or era
   "epochal decisions made by Roosevelt and Churchill"
   - epoch-making

See also: epoch, important, significant

• flowers of zinc
• flowers-of-an-hour
• flowery
• flowing
• floxuridine
• Floyd Bennett
• flu
• flub
• fluctuant
• fluctuate
• fluctuating
• fluctuation
• flue
• flue pipe
• flue stop
• fluegelhorn
• fluence
• fluency
• fluent
• fluent aphasia
• fluently
• fluff
• fluff up
• fluffiness
• fluffy