1. Capable of being weakened
   "the crisis proved his confidence was shakable"
   - shakeable

See also: contestable

• petrel
• Petri dish
• petrifaction
• petrification
• Petrified Forest National Park
• petrify
• petrifying
• Petrine
• petrissage
• petrochemical
• petrochemistry
• Petrocoptis
• petrodollar
• Petrogale
• petroglyph
• Petrograd
• petrography
• petrol
• petrol bomb
• petrol engine
• petrol gage
• petrol gauge
• petrol line
• petrol pump
• petrol station