Synonyms

Impertinent means rude or disrespectful. Impudent, insolent, and cheeky are all synonyms for impertinent.

Impetuous means acting or done quickly and without thought or care. Heady can mean impulsive or rash, making it a synonym in this context.

Implausible means not seeming reasonable or probable; failing to convince. Doubtful is a synonym as it implies lack of conviction or probability.

Importune means to ask someone pressingly and persistently for or to do something. Harass is a synonym as it involves persistent annoyance or pressure.

Impromptu means done without being planned, organized, or rehearsed. Extempore is a direct synonym meaning spoken or done without preparation.

Inarticulate means unable to speak distinctly or express oneself clearly. Faltering is a synonym as it describes hesitant or unclear speech.

Indecorous means not in keeping with good taste and propriety; improper. Inappropriate is a direct synonym.

Incipient means in an initial stage; beginning to happen or develop. Developing is a synonym.

Importunate means persistent, especially to the point of annoyance or intrusion. Insistent is a synonym.

Impiety means a lack of respect for God or religion. Blasphemy is a synonym as it refers to the act of insulting or showing contempt for God.

Indelible means not able to be forgotten or removed. Ineffaceable is a synonym meaning unable to be erased.

Incorrigible describes someone or something that cannot be corrected, improved, or reformed. Unreformable is a direct synonym for this state.

Indoctrinate means to teach a person or group to accept a set of beliefs uncritically. Brainwash is a common synonym for this process of forced belief adoption.

Indiscreet refers to lacking good judgment or care in one's behavior or speech. Careless is the closest synonym among the choices.

Infantile describes behavior that is characteristic of an infant or very young child. Immature is the direct synonym for this behavior in older individuals.

Infallible means incapable of making mistakes or being wrong. Sure is the closest synonym in this context, implying certainty or reliability.

Infidelity refers to the action or state of being unfaithful to a spouse or other sexual partner. Adultery is a specific form of infidelity.

An inquest is a judicial inquiry to ascertain the facts relating to an incident. Hearing, investigation, and inquisition are all terms used to describe such formal inquiries.

Invidious describes an action or situation likely to arouse resentment or anger in others. Discriminating, odious, and horrible can all describe the nature of such actions.

An introvert is a person who is predominantly concerned with their own thoughts and feelings rather than with external things. Unsociable is a common descriptor for this personality type.

Insuperable means impossible to overcome. Insurmountable is a direct synonym.

Insolence refers to rude and disrespectful behavior. Arrogance is a closely related trait often associated with insolent behavior.

Insidious means proceeding in a gradual, subtle way, but with harmful effects. Treacherous, sly, and crafty are all adjectives that capture aspects of this deceptive nature.

A jaunt is a short excursion or journey for pleasure. Excursion, break, and stroll are all terms that can describe such a trip.

Irresolute means showing or feeling hesitancy or uncertainty. Doubtful, vacillating, and wishy-washy are all synonyms for this state of indecision.