LEARNit Dictionary
effectiveness
noun
/ɪˈfektɪvnəs/
UK
/ɪˈfektɪvnəs/
US
C1+
OPAL
1
the fact of producing the result that is wanted or intended; the fact of producing a successful result
اثربخشی, اثرگذاری, موثر بودن
opposite
ineffectiveness