Abstract
In this paper, we reject the usual definition of même si (even if) as single conjunction and meaning as ‘concessive' one. Même si share similar syntactico-semantic properties with ‘conditional', but not ‘concessive', (class of) conjunctions. In fact, même si is a conjunctive phrase including the si (if) conditional conjunction and the appropriate conditional-conjunction modifier : même (even). ‘Concessive' effect is due to même insertion. Meaning of même si has been refined into two semantic interpretation subcategories according to paraphrastic conditional conjunctive phrases : même à (la) condition [que P] or même dans l'hypothèse [où P] .