老 lǎo — (a prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family to indicate affection or familiarity); old (of people)
我的老师很有耐心。Wǒ de lǎo shī hěn yǒu nài xīn.My teacher is very patient.
Common words: 老师 (lǎo shī)、老人 (lǎo rén)、老是 (lǎo shi)
古 gǔ — ancient; old
故宫是中国著名的古建筑。Gù gōng shì Zhōng guó zhù míng de gǔ jiàn zhù.The Forbidden City is a famous ancient building in China.
Common words: 古代 (gǔ dài)、古老 (gǔ lǎo)、古典 (gǔ diǎn)
陈 chén — arrange; exhibit; narrate; tell; old; stale
博物馆里陈列着许多文物。Bó wù guǎn lǐ chén liè zhe xǔ duō wén wù.Many cultural relics are displayed in the museum.
Common words: 陈述 (chén shù)、陈旧 (chén jiù)、新陈代谢 (xīn chén dài xiè)
故 gù — happening; instance; reason; cause; deceased; old
奶奶给我讲了一个古老的故事。Nǎi nai gěi wǒ jiǎng le yí ge gǔ lǎo de gù shi.Grandma told me an old story.
Common words: 故事 (gù shì)、故意 (gù yì)、事故 (shì gù)
积 jī — to amass; to accumulate; to store; old; long-standing
知识需要一点一点地积累。Zhī shi xū yào yì diǎn yì diǎn de jī lěi.Knowledge needs to be accumulated bit by bit.
Common words: 积极 (jī jí)、面积 (miàn jī)、积极性 (jī jí xìng)
旧 jiù — old (opposite of new); former
这件旧衣服我已经穿了好几年。Zhè jiàn jiù yī fu wǒ yǐ jīng chuān le hǎo jǐ nián.I have worn this old piece of clothing for several years.
Common words: 依旧 (yī jiù)、仍旧 (réng jiù)、陈旧 (chén jiù)
估 gū / gù — estimate; old; second-hand (clothes)
我估计他很快就会回来。Wǒ gū jì tā hěn kuài jiù huì huí lái.I estimate that he will be back soon.
Common words: 估计 (gū jì)、评估 (píng gū)、低估 (dī gū)
宿 sù / xiǔ / xiù — lodge for the night; old; former; (a) night; constellation
这次旅行,我们在山里的客栈住宿了一晚。Zhè cì lǚ xíng, wǒ men zài shān lǐ de kè zhàn zhù sù le yì wǎn.On this trip, we stayed overnight at an inn in the mountains.
Common words: 宿舍 (sù shè)、住宿 (zhù sù)、归宿 (guī sù)