'quakeproof' is a modern compound formed from 'quake' + 'proof' in English; 'quake' refers to shaking (earthquake) and 'proof' is used in the sense 'resistant to'.

'quake' comes from Old English (e.g. 'cwacian' meaning 'to tremble') and developed into Middle English 'quaken'/'quake'; 'proof' comes from Old French 'proef' (related to Latin 'probare' meaning 'to test'), with Middle English uses of 'proof' developing the sense 'resistant to' in compounds (e.g. 'waterproof'); these elements were combined in Modern English to form 'quakeproof'.

Initially, 'proof' carried the sense 'tested' or 'proven'; over time in compounds it acquired the meaning 'resistant to' (e.g. 'waterproof', 'bulletproof'), and 'quakeproof' came to mean 'resistant to earthquake shaking'.