Abstract
<jats:p>This paper explores a noteworthy phenomenon in contemporary spoken and written communication in Bulgarian from a linguodidactological perspective (Veselinov 2025), namely, the substitution of the imperfect tense with the aorist in contexts where the imperfect should be used. Taking into account the specifics of imperfect usage, as well as the verb’s aspect, person, and number, the study investigates four typical contexts in which this substitution is observed. Expounding these deviations is essential for both native and foreign/second language teaching of Bulgarian, as it allows learners to recognize, control, and successfully overcome them in their speech. The paper focuses primarily on the teaching and learning of Bulgarian as a foreign/second language.</jats:p>