滞 (Kanji for delay / be overdue)

Onyomi

TAI	I got TIED up, so I am way overdue for my appointment.

I am overdue to find a toilet, so I have already accidentally made water on my belt.

( が ) とどこお*る

be overdue, left undone, backed-up (piles of unpaid bills teeter on the edge of your desk)
★★☆☆☆

渋滞(じゅうたい)	traffic jam ★★★☆☆ 渋 (bitter flavor) + 滞 (delay / be overdue) = 渋滞 (traffic jam)
延滞(えんたい)	late payment. ☆☆☆☆☆ 延 (prolong) + 滞 (delay / be overdue) = 延滞 (late payment.)