key (n.)
tone, voice, manner of expression
MV I.iii.120[Shylock to Antonio] in a bondman's key, / With bated breath and whispering humbleness
TNK I.i.94[Second Queen to Hippolyta, of her request to Theseus] Speak't in a woman's key
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL