nonsensical
adj. B2 Upper Intermediate US //nɑnˈsɛnsɪkəɫ// UK //nˌɒnsˈɛnzɪkəl// non·sen·si·cal
adj. having no meaning or sense. You use this to describe something that is so strange or illogical that it is hard to understand.
adj. lacking a logical or meaningful structure; absurd or meaningless. Often used to describe arguments, statements, or behaviors that defy reason.
The instructions were so nonsensical that I couldn't follow them.
The politician's latest speech was filled with nonsensical claims that made no sense to the audience.
The critic argued that the film's plot was a series of nonsensical events that failed to connect with any coherent theme or narrative arc.
From nonsense + -ical.