one–sided

one–sided /ˈwʌnˈsaÉŖdəd/ adjective
one–sided
/ˈwʌnˈsaÉŖdəd/
adjective
Britannica Dictionary definition of ONE–SIDED
1 
disapproving : showing only one opinion or point of view
2 
: led or controlled by one of the two people or groups involved

— one–sidedness

noun [noncount]