1) Almost irrelevant 2) Implausible 3) Strained 4) Unlikely 1) Tall 
• (a.) Brought from far, or from a remote place. • (a.) Studiously sought; not easily or naturally deduced or introduced; forced; strained.
Far'fetched` adjective 1. Brought from far, or from a remote place. « Every remedy contained a multitude of farfetched and heterogeneous ingredients.» Hawthorne. 2. Studiously sought; not easily or naturally deduced or introduced; forced; strained. 
[adj] - highly imaginative but unlikely
implausible adjective highly imaginative but unlikely; `a farfetched excuse`; `an implausible explanation`