| 底 | dǐ xì | inside information / the ins and outs of the matter / how things stand / what's up | 
| 底 | de | (equivalent to 的 as possessive particle) | 
| 底 | dǐ | bottom; base / background; foundation / copy (of a manuscript or receipt etc) kept as a record / (suffix) end of a year or month / (math.) radix; base (abbr. for 底数) | 
| 细 | xì | thin or slender / finely particulate / thin and soft / fine / delicate / trifling / (of a sound) quiet / frugal |