1
(=efficient, useful)
[treatment, method, deterrent, system] efectivo, eficaz
[remark, argument] eficaz
the method is simple, but effective el método es simple pero efectivo or eficaz
→ to be effective against sth
[drug] ser eficaz contra algo
→ effective capacity (Tech) capacidad f útil
→ to be effective in doing sth ser eficaz para hacer algo
→ effective life (Pharm) vida f útil
→ effective power (Tech) potencia f real
→ effective ways of reducing pollution formas fpl efectivas or eficaces de reducir la polución