indefinable /in-di-fīˈnə-bl/

1. That cannot be defined
2. Hard to identify or describe

indefinˈableness noun

• like the devil
• like the wind
• likewake
• likewakes
• likewalk
• likewalks
• like water
• like water off a duck's back
• like wildfire
• like winking
• likewise
• likin
• liking
• likings
• likins
• lilac
• lilacs
• lilangeni
• Liliaceae
• liliaceous
• lilied
• lilies
• lilies of the Nile
• lilies of the valley
• Lilium