深信不疑

Traditional form:

深信不疑

Pinyin (reading):

shēnxìnbùyí

Definitions:

• to believe firmly without any doubt (idiom)
• absolute certainty about sth

Characters:

• 深 - deep, profound; depth
• 信 - to trust, to believe; letter, sign
• 不 - no, not, un-; negative prefix
• 疑 - to doubt, to question, to suspect

Traditional characters:

• 深 - deep, profound; depth
• 信 - to trust, to believe; letter, sign
• 不 - no, not, un-; negative prefix
• 疑 - to doubt, to question, to suspect