Vocabulary What does でたらめ (detarame) mean? でたらめ means groundless, random, nonsense. Quick factsReadingでたらめRomajidetarameLevel (estimated, JLPT framework)N2 でたらめでたらめN2 · estimated, JLPT frameworkdetaramegroundless, random, nonsenseExample sentences彼(かれ)の話(はなし)はでたらめだ。What he says is nonsense.でたらめな数字(すうじ)を書(か)かないで。Don't write random, made-up numbers.