Shocking

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mid 16th century: from French choc (noun), choquer (verb), of unknown origin. The original senses were ‘throw (troops) into confusion by charging at them’ and ‘an encounter between charging forces’, giving rise to the notion of ‘sudden violent blow or impact’.

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etymonline

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shocking (adj.)

1690s, "offensive," present-participle adjective from shock (v.1). From 1704 as "causing a jolt of indignation, horror, etc.;" from 1798 as "so bad as to be shocking." Related: Shockingly. Shocking pink introduced February 1937 by Italian-born fashion designer Elsa Schiaparelli.