'law-abidingness' originates from English, specifically by combining 'law' + the adjective 'abiding' + the noun-forming suffix '-ness'.

'law' comes from Old English 'lagu' (influenced by Old Norse 'lagu'); 'abide' comes from Old English 'abidan' ('a-' + 'bidan' meaning 'to wait/remain'); the adjective 'law-abiding' developed in Modern English and later took the suffix '-ness' (from Old English '-nes(s)e') to form the abstract noun 'law-abidingness'.

Initially the components referred separately to 'rule/what is laid down' ('law') and 'to remain/submit' ('abide'); combined and nominalized they evolved into the modern meaning 'the quality of obeying the law'.