unnecessary not needed
incessant uninterrupted in time and indefinitely long continuing
genus Herpestes mongooses
necessary absolutely essential
exacerbate make worse
unnecessarily without any necessity
unsurpassed not capable of being improved on
genus Syrrhaptes a genus of Pteroclididae
Yersinia pestis a bacillus bacterium that causes the plague
unseasonableness being at an inappropriate time
unsociableness an unsociable disposition
genus Sarcocystis chief genus of the order Sarcosporidia
unsuspicious not suspicious
Anthoceropsida hornworts: in some classification systems included in the class Hepaticopsida
genus Cerastes horned vipers
incessantness the quality of something that continues without end or interruption
Insessores a bird with feet adapted for perching
genus Sarcoptes type genus of the family Sarcoptidae: itch mites
Erinaceus europeaeus small nocturnal Old World mammal covered with both hair and protective spines
answerableness responsibility to someone or for some activity