1. In an arduous manner
   "they worked arduously"
   - toilsomely, gruellingly [Brit, Cdn], gruelingly [US]

See also: arduous

• flowering spurge
• flowering stone
• flowering tobacco
• flowering tree
• flowering wintergreen
• flowerless
• flowerpot
• 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