1. Not knowable
   "the unknowable mysteries of life"

See also: transcendent

Antonym: knowable

• pigeon droppings
• pigeon guillemot
• pigeon hawk
• pigeon loft
• pigeon pea
• pigeon toes
• pigeon-breasted
• pigeon-pea plant
• pigeon-toed
• pigeonhole
• pigeonholing
• pigfish
• piggery
• piggish
• piggishly
• piggishness
• piggy
• piggy bank
• piggyback
• piggyback plant
• pigheaded
• pigheadedness
• piglet
• pigman
• pigment