From un- + libellous. <span class="searchmatch">unlibellous</span> (comparative more <span class="searchmatch">unlibellous</span>, superlative most <span class="searchmatch">unlibellous</span>) Not libellous....
libellous (comparative more libellous, superlative most libellous) (British spelling) Alternative spelling of libelous. libellously <span class="searchmatch">unlibellous</span>...