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

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v. To write one's signature on the back of (a check, for example) as evidence of the legal transfer of its ownership, especially in return for the cash or credit indicated on its face.

v. To place (one's signature), as on a contract, to indicate approval of its contents or terms.

v. To acknowledge (receipt of payment) by signing a bill, draft, or other instrument.

v. To give approval of or support to, especially by public statement; sanction: endorse a political candidate. See Synonyms at approve.

v. To support, to back, to give one's approval to, especially officially or by signature.

v. To write one's signature on the back of a cheque, or other negotiable instrument, when transferring it to a third party, or cashing it.

v. To give an endorsement.

n. A diminutive of the pale, usually appearing in pairs on either side of a pale.

v. Same as indorse.

n. A subordinary, resembling the pale, but of one fourth its width (according to some writers, one eighth).

v. give support or one's approval to

v. guarantee as meeting a certain standard

v. sign as evidence of legal transfer

v. be behind; approve of

""The word 'endorse,' in my view, means 'sign,'" she wrote."

endorsed    endorses    endorsing   

support    back up    warrant    guarantee   

dorsal   

indorse   

endorsed    endorsing    endorsement   

indoors   

Corse    Force    Morse    Norse    bourse    coarse    corse    course    divorce    enforce   

much-hated    seed-spitting    calligraphic    obsessional    epostal    lawyerlike    copperplate    lowercase    pie-eating    one-candidate