inocente, innocent, simple.
inquietarse, to worry, be troubled.
inquieto, uneasy, restless, worried; de —, with (for) uneasiness.
inquietud, f., uneasiness, anxiety.
insaciable, insatiable.
insalubre, unhealthful.
inseguro, unsteady, faltering.
insensato, mad, insensate.
insigne, notable, illustrious, distinguished.