Sole means not shared with others. If it's your sole responsibility to make the chocolate cake for a party, it's all on you.

Sole comes from the Latin solus, meaning "alone," and it can describe being the only person involved in something, like being the sole member of the Special People Club. As a noun, your sole is the bottom of your foot. If you order sole in a restaurant, you'll get a flat fish that looks like the bottom of your shoe. Although they sound alike, if you order the soul, the waitperson might send you to a church down the street.

Definitions of sole
  1. noun
    the underside of the foot
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    type of:
    area, region
    a part of an animal that has a special function or is supplied by a given artery or nerve
  2. noun
    the underside of footwear or a golf club
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    half sole
    shoe sole extending from the shank to the toe
    innersole, insole
    the inner sole of a shoe or boot where the foot rests
    the outer sole of a shoe or boot that is the bottom of the shoe and makes contact with the ground
    type of:
    bottom, underside, undersurface
    the lower side of anything
  3. verb
    put a new sole on
    sole the shoes”
    synonyms: resole
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    type of:
    bushel, doctor, fix, furbish up, mend, repair, restore, touch on
    restore by replacing a part or putting together what is torn or broken
  4. adjective
    not divided or shared with others
    sole rights of publication”
    synonyms: exclusive
    not shared
  5. adjective
    being the only one; single and isolated from others
    “the sole heir”
    “the sole example”
    synonyms: lone, lonesome, only, solitary
    existing alone or consisting of one entity or part or aspect or individual
  6. noun
    lean flesh of any of several flatfish
    synonyms: fillet of sole
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    gray sole, grey sole
    greyish-white flesh of a flatfish
    English sole, lemon sole
    highly valued almost pure white flesh
    type of:
    sweet lean whitish flesh of any of numerous thin-bodied fish; usually served as thin fillets
  7. noun
    right-eyed flatfish; many are valued as food; most common in warm seas especially European
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    European sole, Solea solea
    highly valued as food
    Solea lascaris, lemon sole
    small European sole
    English sole, Parophrys vitulus, lemon sole
    popular pale brown food flatfish of the Pacific coast of North America
    Psettichthys melanostichus, sand sole
    a common flatfish of the Pacific coast of North America
    Trinectes maculatus, hogchoker
    useless as food; in coastal streams from Maine to Texas and Panama
    type of:
    food fish
    any fish used for food by human beings
    any of several families of fishes having flattened bodies that swim along the sea floor on one side of the body with both eyes on the upper side
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