knobby (adj.)

• alpestrine
• alpine
• burled
• gnarled
• gnarly
• hilly
• knobbed
• knobbly
• knotted
• knotty
• lumpy
• mountainous
• nodal
• nodular
• nodulated
• noduled
• nubbly
• nubby
• rolling
• studded
• subalpine
• tubercular
• tuberculous
• tuberous