From indefectible + -ly. <span class="searchmatch">indefectibly</span> (comparative more <span class="searchmatch">indefectibly</span>, superlative most <span class="searchmatch">indefectibly</span>) In an indefectible manner....
From indefettibile + -mente. indefettibilmente <span class="searchmatch">indefectibly</span>, without failing...
From indéfectible + -ment. indéfectiblement <span class="searchmatch">indefectibly</span>, unfailingly, unswervingly “indéfectiblement”, in Trésor de la langue française informatisé [Digitized...
defect or failure, permanent, lasting. Without flaw or defect, perfect. <span class="searchmatch">indefectibly</span> indefectible m or f (masculine and feminine plural indefectibles) unfailing...