Here is a list of nouns that start with IMP.

impact, impairment, impartiality, impasse, impatience

impediment, imperative, imperfectability, imperfection, imperialism

imperialist, impersonation, impiety, implant, implement

implementation, implication, import, importance, importation

imposition, impossibility, impotence, impotency, impresario

impresser, impression, impressionist, imprimatur, imprisonment

impromptu, impropriety, improvement, improvisation, improviser

improvising, impudence, impulse, impunity, impurity

imputation

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