arduous /ärˈdū-əs/

1. Steep, difficult to climb
2. Difficult to accomplish
3. Laborious

ardˈuously adverb

• gurge
• gurges
• gurgitation
• gurgitations
• gurgle
• gurgled
• gurgles
• gurgling
• gurgoyle
• gurgoyles
• gurjun
• gurjuns
• Gurkha
• Gurkhali
• gurl
• gurled
• gurlet
• gurlets
• gurlier
• gurliest
• gurling
• gurls
• gurly
• Gurmukhi
• gurn