What it means
AだのBだの lists representative items, actions, or qualities with the sense of “things like A and B, and so on.” It often presents a scattered or exhaustive-sounding series rather than a neutral list, and it can imply criticism, exaggeration, or the speaker’s impatience depending on context. Nouns, na-adjectives, i-adjectives, and plain-form verbs can occur before だの. The construction is especially common before と, を, or して in longer sentences.
Usage note
だの is usually more emphatic and less neutral than とか, and it is frequently used when listing complaints or examples that the speaker does not want to enumerate fully. It does not have a separate polite replacement; politeness is expressed elsewhere in the sentence.
Example sentences
弟は宿題が多いだの、先生の説明が長いだのと言って、なかなか机に向かわない。
My younger brother says things like his homework is too much and his teacher's explanations are too long, and he will not sit down at his desk.
彼は給料が低いだの、通勤時間が長いだのと不満を並