Your penknife is....It's so blunt that you can't cut anything with it. usuant useless...

Question

Your penknife is....It's so blunt that you can't cut anything with it.
usuant
useless
usetic
useful

Answer 1

Your penknife is useless it's so blunt that you can't cut anything with it. 

Answer 2

Useless и там и там ,useless-бесполезный