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improvisational composed at the time of performance.
improvisatory created right at the moment, without any previous decision-making or preparation.
improvise to create or provide without preparation or practice, esp. in music, speech, or writing. [4 definitions]
improvised constructed or composed from whatever materials are available or handy. [2 definitions]
imprudent marked by a lack of awareness or concern for the consequences of one's acts; rash; unwise.
impudence the act or condition of being impudent; insolence. [2 definitions]
impudent tending to cause anger or irritation in others by bold disrespect.
impugn to call into question; challenge or try to discredit.
impugnable combined form of impugn.
impulse a spontaneous or sudden desire that may move one to action. [5 definitions]
impulsion the act of impelling or the state of being impelled. [3 definitions]
impulsive motivated by spontaneous wishes and needs rather than careful thought. [3 definitions]
impunity exemption or immunity from harm, esp. punishment or retribution, as a result of one's actions or words.
impure mixed with or contaminated by other things, esp. of inferior quality; adulterated or polluted. [3 definitions]
impurity the state or condition of being impure. [2 definitions]
imputation attribution to a source or cause. [2 definitions]
impute to ascribe or attribute to a source or cause. [2 definitions]
-in1 any of various chemical substances or minerals, including certain proteins, enzymes, antibiotics, and pharmaceuticals. [2 definitions]
-in2 organized public activity of (such) a type, often as a means of demonstrating approval or protest.
In symbol of the chemical element indium.
IN abbreviation of "Indiana," a Midwestern U.S. state between Illinois and Ohio.