讨底

to enquire / to demand details

(equivalent to 的 as possessive particle)

background / bottom / base / end (of the month, year etc) / remnants / (math.) radix / base

to invite / to provoke / to demand or ask for / to send armed forces to suppress / to denounce or condemn / to marry (a woman) / to discuss or study

erhua variant of 討底|讨底[tao3 di3]