滞 (readings: たい, てい, とどこお; Japanese kanji) means “Stagnate / Be Delayed / Overdue / Arrears”. It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 滞在 (stay).
What does 滞 mean?