ignoratio elenchied

(/ˌɪɡ.nəˈɹeɪ.ʃiˌoʊ ɪˈlɛŋ.kaɪd/)

adj.

Being marked by a general downturn in cognitive and motor skills caused by alcohol.

As the night wore on, Wa became increasingly ignoratio elenchied, with each anecdote more outlandish than the last.

Source: Wiktionary