Where does “self-defence” come from?

self-defence (English) comes from English defence, from Middle English defens, from Old French defens, from Late Latin defensa, from Latin defensus, from Latin dēfendō, from Latin dē-, from Latin dē — afterwards, post; by, at.

Ancestry of “self-defence”, step by step

self-defence traces back through two separate lines of ancestry.

via English defence

StepLanguageWordMeaning
1EnglishdefenceThe action of defending, of protecting from...
2Middle Englishdefensthe act of defending
3Old Frenchdefens
4Late Latindefensaprotection; bounded, defended; defence
5Latindefensusdriven away, having been driven away; defended,...
6Latindēfendōto drive away
7Latindē-of; from
8Latinof; concerning; about
9Latinpostbehind; after, since, besides, except; behind,...
10Latinposteablative singular of postis
11Proto-Italicpostibehind, after
12Proto-Indo-Europeanpóstiafter
13Proto-Indo-Europeanpósafterwards, post; by, at

via English Self

StepLanguageWordMeaning
1EnglishSelfHimself, herself, itself, themself, themselves; that specific (person mentioned)
2Middle EnglishsalveAlternative form of sauf
3Old Englishsealfsalve
4Proto-West Germanicsalbusalve, ointment
5Proto-Germanicsalbōsalve, ointment
6Proto-Indo-Europeansolp-éh₂
7Proto-Indo-Europeanselp-fat, oil
Every word from Proto-Indo-European pósEvery word from Latin dē-Every word from Proto-Indo-European pósti
self-defence — Etymology, Origin & Word History | Etymology Explorer