This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One that has charge of something; a caretaker: the custodian of a minor child's estate; the custodian of an absentee landlord's property.

n. A janitor: worked nights as custodian of a high school.

n. A person entrusted with the custody or care of something or someone; a caretaker or keeper.

n. a janitor (US); a cleaner

n. One who has care or custody, as of some public building; a keeper or superintendent.

n. One who has the care or custody of anything, as of a library, a public building, a lunatic, etc.; a keeper or guardian.

n. one having charge of buildings or grounds or animals

"The custodian is also prepared to provide some explanation (in Spanish) of both the techniques used and the subject matter chosen by those enterprising indigenous eighteenth century "Michelangelos" of the New World."

shielder    protector    guardian    defender   

custodial    custody   

curator    janitor    lighthouse keeper    pet sitter    zoo keeper    critter sitter    house sitter    greenskeeper    caretaker    game warden   

custodianship   

guardian    guardianess    keeper    custodier    custos    conservator    curator    curatrix    warden    concierge   

Cambodian    Nickelodeon    collodion    nickelodeon    odeon   

curator    storekeeper    trustee    guarantor    warden    inheritor    superintendent    executor    caretaker    stakeholder