'angustiado' originates from Spanish, specifically formed from the verb 'angustiar' and the noun 'angustia', ultimately from Latin 'angustus', where 'angustus' meant 'narrow'.

'angustiado' changed from Late Latin/Medieval Latin words related to 'angustia'/'angustiare', passed into Old Spanish as 'angustiar', and eventually became the modern Spanish adjective 'angustiado' (past participle form used adjectivally).

Initially it was related to the concrete idea of 'narrowness' ('narrow'), but over time the sense shifted via physical tightness to a psychological meaning of 'distress' or 'anxiety', giving the current meaning 'distressed, anxious'.