deep

Evolution

笃 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
笃 Clerical script Eastern Han dynasty (25-220 AD)

Clerical script

Eastern Han dynasty (25-220 AD)
笃 Traditional script Modern

Traditional script

Modern
笃 Simplified script Modern

Simplified script

Modern
Definitions

() 

deep, true, sincere, genuine; serious (illness); sincere; true

Most common words with 笃
Freq.
Word
Meaning

true

笃定

certain

笃信

to believe firmly

笃行

to behave sincerely

笃志

steadfast