Fromthunder +‎clap.

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thunderclap (pluralthunderclaps)

1. Asudden,loudthunder caused by a nearbylightning strike; ashock of thunder, as opposed to areverberatingrumble.
   • 1590,Edmund Spenser, “(please specify the book)”, inThe Faerie Queene. […], London:[…] [John Wolfe] forWilliam Ponsonbie,→OCLC:

     Thunderclaps that make them quake.

   • 1600 (date written), [John Marston],Iacke Drums Entertainment: Or The Comedie of Pasquill and Katherine. […], London:[…] [Thomas Creede] for Richard Oliue[i.e., Oliff], […], published1601,→OCLC, Act II,signature D2, verso:

     Ile home, and ſtarue, this croſſe, this peeuiſh hap, / Strikes dead my ſpirits like athunderclap.

   • 1685,John Dryden,Threnodia Augustalis:

     When suddenly thethunderclap was heard.

2. (figurative) Something that makes a big, dramatic impact.
   • 2022 October 10, Jenna Scherer, “House Of The Dragon drops its best episode yet”, inAV Club‎^[1]:

     A 21-Valyrian steel dagger salute to Paddy Considine, who makes his exit fromHouse Of The Dragon this week with athunderclap of a performance. “The Lord of the Tides” is the swan song for his King Viserys I Targaryen, a well-intentioned but indecisive man who waited until the very last day of his life to flex his royal might.

3. (literature)Synonym ofthunder word
   • 2012, Kenneth Silverman,Begin Again: A Biography of John Cage, page292:

     […] thethunderclaps, and advised Cage on their meaning. Cage considered composing new star-map music, in which microphones attached to the throats of the chorus members would make their singing of Joyce's verbalthunderclaps sound like[…]

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thunderclap (third-person singular simple presentthunderclaps,present participlethunderclapping,simple past and past participlethunderclapped)

1. (intransitive) To produce aloudburst ofsound like athunderclap.
   • 2000, Arelo C. Sederberg,Zora, page309:

     It struck just before dark, a massive black geyser of oil and gas thatthunderclapped from the well, soaring a hundred feet into the air and then even higher,[…]

   • 2003, Kathryn Shay,Against the Odds, page118:

     So many sensations — the feel of his strong fingers gripping her shoulders, his heartthunderclapping in his chest, his legs and hips aligned with hers, as if the two of them had been fashioned out of the same block of clay.

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