inquieto, -a restless, uneasy, anxious, disturbed, agitated.
inquietud f. uneasiness, anxiety, disquietude, restlessness.
insano, -a insane, mad.
insensible adj. indifferent, without feeling.
insigne adj. renowned, famed, distinguished.
insistir insist, persist.
insolencia f. insolence.
insolente adj. insolent.
inspirar inspire, impart.
instante m. instant, moment.