Untrustworthy (ناقابل اعتبار) means not able to be relied upon as honest or truthful. 'Undependable' (ناقابل بھروسہ) is a direct synonym.

Untoward (ناخوشگوار) means unexpected and inappropriate or 'unfortunate' (بدقسمت); adverse.

Untidy (بے ترتیب) means not arranged neatly. 'Disorderly' (بے سلیقہ) is a direct synonym. 'Slovenly' (پھوہڑ) describes a person who is untidy.

Unobtrusive (غیر نمایاں) means not conspicuous or attracting attention. 'Discreet' (محتاط) or inconspicuous is the best synonym.

Unique (منفرد) means being the only one of its kind; unlike anything else. 'Unequaled' (بے مثال) is a direct synonym. 'Common' (عام) is the antonym.

Unimpeachable (ناقابل تردید) means not able to be doubted, questioned, or criticized. It is 'above suspicion' (شک سے بالاتر).

Unholy (ناپاک) means wicked, 'sinful' (گناہ گار), or 'profane' (کافرانہ). It is the opposite of sacred.

Unequivocal (واضح) means leaving no doubt; 'unmistakable' (واضح) or unambiguous. 'Equivocal' is the antonym.

Unduly (بے جا) means to an 'excessive' (حد سے زیادہ) or unwarranted degree (e.g., 'unduly worried').

An undertaking (وعدہ) is a formal 'promise' (عہد) or pledge to do something. 'To undertake' means to 'embark on' (شروع کرنا) a task.