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

• Lexulous
• Wordscraper
• Wordosaur

n. A person that responds to an emergency situation or other calling.

n. One who or that which responds.

n. An electrolytic detector or receiver for wireless telegraphy.

n. someone who responds

""A responder is someone who does what is right, whether anyone is looking or not," King said."

communicator   

hedger    equivocator    assenter    interviewee    tergiversator    testee    examinee   

blonder    conder    condor    fonder    ponder    squander    transponder    wander    yonder   

suceder    maleatebuy    sentia    cualquiera    sucedido    obtener    tratar    enalapril    updatepanel    desprecio