"hammered, wrought upon by beating" (of metal, etc.), c. 1300, from alternative past participle of beat (v.). The meaning "defeated, vanquished" is from 1560s; that of "repeatedly struck" is from 1590s.
c. 1600, from Malay (Austronesian) gong, which is probably imitative of its sound when struck. As a verb by 1853. Related: Gonged; gonging.
1660s, correction of earlier stupendious "causing astonishment, astounding" (1540s), from Late Latin stupendus "to be wondered at," gerundive of Latin stupere "be stunned, be struck senseless, be aghast, astounded, or amazed" (see stupid). Related: Stupendously; stupendousness.
"sonorousness, resonance, the quality of giving sound when struck," 1620s, from French sonorité and directly from Latin sonoritas "fullness of sound," from sonorus "resounding" (see sonorous).