謹〔谨〕 gan² {jǐn}

1. cautious
2. careful
3. solemnly
4. sincerely (formal)

謹防〔谨-〕 gan² fong⁴ {jǐn fáng}

1. to guard against
2. to beware of

謹記〔谨记〕 gan² gei³ {jǐn jì}

1. to remember with reverence
2. to bear in mind
3. to keep in mind

謹嚴〔谨严〕 gan² jim⁴ {jǐn yán}

1. meticulous
2. rigorous

謹啟〔谨启〕 gan² kai² {jǐn qǐ}

respectfully yours (in letters)

謹慎〔谨-〕 gan² san⁶ {jǐn shèn}

1. cautious
2. prudent

謹守〔谨-〕 gan² sau² {jǐn shǒu}

to adhere strictly (to the rules)

謹上〔谨-〕 gan² soeng⁵ {jǐn shàng}

respectfully yours (in closing a letter)

謹小慎微〔谨---〕 gan² siu² san⁶ mei⁴ {jǐn xiǎo shèn wēi}

meticulous; punctilious