没齿难忘

Traditional form:

沒齒難忘

Pinyin (reading):

mòchǐnánwàng

Definitions:

• hard to forget even after one's teeth fall out (idiom); to remember a benefactor as long as one lives
• undying gratitude

Characters:

• 没 - not, none, gone; to bury; to sink, to drown
• 齿 - teeth; gears, cogs; age
• 难 - hard, difficult, arduous; unable
• 忘 - to forget, to miss, to neglect, to overlook

Traditional characters:

• 沒 - not, none, gone; to bury; to sink, to drown
• 齒 - teeth; gears, cogs; age
• 難 - hard, difficult, arduous; unable
• 忘 - to forget, to miss, to neglect, to overlook