Where does “자꾸만” come from?

자꾸만 (Korean) comes from Korean 자꾸, from Japanese チャック, from English Chuck, from English chock, from French choquer, from German schockieren, from Spanish chocar, from Portuguese chocar — er.

Ancestry of “자꾸만”, step by step

StepLanguageWordMeaning
1Korean자꾸repeatedly; incessantly
2Japaneseチャックa zipper, a zip fastener
3EnglishChucka Chuck Taylor All-Stars shoe
4EnglishchockAny object used as a wedge or filler, especially...
5Frenchchoquerto hit, to collide; to shock
6Germanschockierento shock
7Spanishchocarto crash; to bump into, to collide with; to...
8Portuguesechocarto brood; to hatch; to linger
9Russianшоки́роватьto horrify, to scandalize, to shock
10Russian-и́роватьa productive verbal suffix, also used to create new verbs, especially from loanwords
11German-ierenVerb suffix: it and its inflected forms are found...
12French-erForms infinitives of first-conjugation verbs
13Middle French-erForms infinitives of first-conjugation verbs;...
14Old French-iersuffix used to form infinitives of first...
15Latin-āriuser
Every word from Latin -āriusEvery word from French -erEvery word from German -ieren