From sub- + spontaneous. <span class="searchmatch">subspontaneous</span> (not comparable) (of plants) Partly cultivated by human labor and partly growing wild. <span class="searchmatch">subspontaneously</span>...
From <span class="searchmatch">subspontaneous</span> + -ly. <span class="searchmatch">subspontaneously</span> (not comparable) In a <span class="searchmatch">subspontaneous</span> manner....