The negotiations ended in failure.
I was disappointed by the poor result.
disfavor; unpopularity
Refers to being out of favor or lacking popularity, often in social or professional contexts. Less common than the failure sense.
He was in disfavor with his boss and couldn't get promoted.
Antonym of 不首尾, meaning success or a favorable outcome. Also formal.
great success; happy result
不首尾 means an unsuccessful or unsatisfactory outcome, the direct opposite of a good 首尾 (successful result).
Compound of 不 (fu, 'not') and 首尾 (shubi, 'beginning and end; outcome'). The term 首尾 originally referred to the head and tail, later extended to mean the course or result of an affair.