obsidious

== English == === Adjective === obsidious (comparative more obsidious, superlative most obsidious) (rare) besieging; besetting, obsessional ==== Related terms ==== obsidian === References === John A. Simpson and Edmund S. C. Weiner, editors (1989), “obsidious”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.