Not having the qualities you would normally expect from that kind of person, thing, or group — different from the usual example. 'A typical Taiwanese breakfast' is what you expect; 'an untypical Taiwanese breakfast' is one that surprises you. It usually appears with 'of': untypical of him, untypical of the region, untypical of this company.

Not having the qualities you would normally expect from that kind of person, thing, or group沒有一般會從那種人、事物或群體身上預期的特質different from the usual example跟平常的例子不一樣'A typical Taiwanese breakfast' is what you expect「typical Taiwanese breakfast」是你會預期的'an untypical Taiwanese breakfast' is one that surprises you「untypical Taiwanese breakfast」則會讓你意外It usually appears with 'of'它通常會跟of一起出現untypical of him, untypical of the region, untypical of this company像untypical of him、untypical of the region、untypical of this company

Here is the thing your dictionary may not tell you: English has two words for this, 'untypical' and 'atypical', and 'atypical' is far more common. 'Atypical' is the standard choice in science, medicine, and statistics ('atypical cells', 'an atypical case'). 'Untypical' is the plainer, more everyday one, more common in British writing, and it tends to describe behaviour or a moment rather than a technical category — 'It was untypical of her to shout.' Neither is wrong; they simply sit in different rooms.

Here is the thing your dictionary may not tell you這件事你的字典可能沒告訴你English has two words for this, 'untypical' and 'atypical'英文這個意思有兩個字untypical和atypicaland 'atypical' is far more common而atypical常見得多'Atypical' is the standard choice in science, medicine, and statisticsatypical是科學、醫學、統計裡的標準用字('atypical cells', 'an atypical case')像atypical cells、an atypical case'Untypical' is the plainer, more everyday one, more common in British writinguntypical比較平實日常英式寫作裡更常見and it tends to describe behaviour or a moment rather than a technical category而且比較常用來形容行為或某個時刻而不是技術性的類別'It was untypical of her to shout.'像「It was untypical of her to shout.」Neither is wrong; they simply sit in different rooms兩個都沒錯只是各自待在不同的房間裡

And note the tone: untypical is neutral. It says 'different from usual', not 'wrong' and not 'special'.

And note the tone還要注意語氣untypical is neutraluntypical是中性的It says 'different from usual'它說的是「跟平常不一樣」not 'wrong' and not 'special'不是「錯」也不是「特別」