anguish

 
Pronunciation: /ˈaŋgwɪʃ/

noun

[mass noun]
  • severe mental or physical pain or suffering: she shut her eyes in anguish Philip gave a cry of anguish

verb

[no object]
  • be extremely distressed about something: I spent the next two weeks anguishing about whether I’d made the right decision

Origin:

Middle English: via Old French from Latin angustia 'tightness', (plural) 'straits, distress', from angustus 'narrow'