a for·ti·o·ri /ˌeˌfɔrʃiˈorˌaɪ, ˌɑˌfɔrʃiˈori, ˌfɔrti, ˈɔr-/
A for·ti·o·ri Logic & Math. With stronger reason.
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a fortiori
adv : for a still stronger, more certain reason; "if you are wrong
then, a foritori, so am I" [syn: with greater reason,
with more reason]