Deference (احترام) is polite submission and respect shown to another. It often involves yielding to their judgment, which is a form of 'obedience' (فرمانبرداری). 'Disregard' (نظر انداز کرنا) is an antonym.

Defamation (ہتک عزت) is the act of damaging someone's good reputation. 'Derogation' (تذلیل) is the act of belittling or detracting from, which is a key part of defamation. 'Praise' (تعریف) is the antonym.

To dedicate (وقف کرنا) means to 'devote' (مخصوص کرنا) time, effort, or oneself to a particular task, purpose, or person.

To decry (مذمت کرنا) means to publicly denounce or 'condemn' (برا بھلا کہنا) something as wrong or bad. 'Applaud' (تعریف کرنا) is the antonym.

Decorous (مہذب) means in keeping with good taste and propriety; polite and restrained. 'Proper' (مناسب) is the best synonym.

To decompress (دباؤ کم کرنا) means to 'reduce pressure' (دباؤ گھٹانا), such as returning a diver to normal atmospheric pressure, or uncompressing a digital file.

To decipher (پڑھنا) means to convert something (like a code or bad handwriting) into normal, understandable language. 'Decode' (خفیہ تحریر کو سمجھنا) is a direct synonym.

Decay (زوال) is the process of rotting or decomposing; a gradual decline in quality or strength. 'Deterioration' (خرابی) is a direct synonym.

A decade (عشرہ) is 'a period of ten years' (دس سال کا عرصہ).

To debug (نقائص دور کرنا) means to identify and remove errors ('bugs') from computer hardware or software. It is 'to correct faults' (خامیاں درست کرنا).