dumbshow

Noun

dumb show (countable and uncountable, plural dumb shows)

1. A performance during which the players do not speak; mime.
   • O it offends mee to the Soule, to ſee a robuſtious Pery-wig-pated Fellow, teare a Paſſion to tatters, to verie ragges, to ſplit the eares of the Groundlings: who (for the moſt part) are capeable of nothing, but inexplicable dumbe ſhewes, & noiſe: […]c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac...
2. The use of gesture in an attempt to convey meaning.
   • The move is obviously pure piffle: a dumbshow designed to placate (or at least entertain) the conservative base while distracting and antagonising rivals.2022 May 31, James Vincent, “Boris Johnson’s move to bring back imperial units is pure piffle – and simply unfathomable”, in The Guardian