Describing someone (or something) you should not trust. Break it open and it says exactly what it means: not worthy of trust — not deserving to be trusted.

Describing someone (or something) you should not trust形容一個你不該信任的人（或東西） Break it open and it says exactly what it means把這個字拆開來看，意思就跟字面一樣 not worthy of trust — not deserving to be trustednot worthy of trust——不值得被信任

It is used two ways. About people, it means they may lie to you, break a promise, or let you down: an untrustworthy business partner, an untrustworthy witness. About things — information, sources, machines — it means you cannot rely on what they give you: an untrustworthy website, untrustworthy data, an untrustworthy old car.

It is used two ways它有兩種用法 About people用在人身上 it means they may lie to you, break a promise, or let you down意思是這個人可能會對你說謊、毀約，或讓你失望 an untrustworthy business partner, an untrustworthy witnessan untrustworthy business partner（不可靠的生意夥伴）、an untrustworthy witness（不可信的證人） About things — information, sources, machines用在事物上——資訊、來源、機器 it means you cannot rely on what they give you意思是你不能依賴它們給你的東西 an untrustworthy website, untrustworthy data, an untrustworthy old caran untrustworthy website（不可信的網站）、untrustworthy data（不可靠的資料）、an untrustworthy old car（靠不住的老車）

It is a serious word, stronger and colder than saying someone is 'not very reliable'. To call a person untrustworthy is close to calling them dishonest, so it lands hard; people often soften it ('I found him a little untrustworthy') or say it about a situation rather than to someone's face.

It is a serious word這是個嚴重的字 stronger and colder than saying someone is 'not very reliable'比說一個人'not very reliable'更重、更冷 To call a person untrustworthy is close to calling them dishonest說一個人untrustworthy，幾乎等於說他不誠實 so it lands hard所以講出來很傷人 people often soften it ('I found him a little untrustworthy')因此大家常常會軟化語氣（'I found him a little untrustworthy'） or say it about a situation rather than to someone's face或是講一個情況，而不是當面對一個人這樣說

Notice the shape too: unlike many un- words, it has no comfortable opposite pair in speech — people say 'I don't trust him' far more often than 'he is untrustworthy', which belongs more to reports, reviews, and careful writing.

Notice the shape too還要注意一個現象 unlike many un- words跟很多un-開頭的字不一樣 it has no comfortable opposite pair in speech它在口語裡沒有一個對應好用的說法 people say 'I don't trust him' far more often than 'he is untrustworthy'大家講'I don't trust him'的頻率，遠高於講'he is untrustworthy' which belongs more to reports, reviews, and careful writing後者比較屬於報告、評論和嚴謹寫作的用字