insidious

a.隐伏的，潜在的，暗中为害的

insensate, insensately, insensibility, insensible, insensibly, insensitive, insensitively, insensitivity, insentient, inseparability, inseparable, inseparably, insert, insertion, inset, inshore, inside, inside lane, inside left, inside right player, insider, insidiously, insidiousness, insight, insightful, insignia, insignificance, insignificant, insignificantly, insincere, insincerely, insincerity, insinuate, insinuation, insipid, insipidity, insipidly, insist, insist on sth. (doing sth.), insist upon, insistence,