Erectile Dysfunction is defined as persistent or recurrent, partial or/ complete, failure to obtain or sustain, an erection until completion of satisfactory sexual activity.

Other terms for erectile dysfunction are Impotence, erectile failure, erectile dysfunctions, sexual inadequacy, sexual weakness, less erection, decreased erection, failure in intercourse, sexual incompetence, unable to sex i.e. intercourse, erection problem, napunsakata, less hardness of penis, looseness of penis in mid of sex or before penetration, E. D., ED, etc.