To debase (بے قدر کرنا) means to reduce something in quality or value; to degrade. This action can 'disgrace' (ذلیل کرنا) or bring dishonor. 'Elevate' (بلند کرنا) is an antonym.

A debacle (تباہی) is a sudden and ignominious failure; a fiasco. It signifies a 'disastrous collapse' (تباہ کن زوال).

To dawdle (وقت ضائع کرنا) means to waste time or be slow. 'To loiter' (آوارہ پھرنا) means to stand or wait idly, which is a form of dawdling.

To daunt (خوفزدہ کرنا) means to make someone feel intimidated or apprehensive. It is to 'dismay' (بددل کرنا) or discourage them. 'Heartened' (حوصلہ افزائی کرنا) is an antonym.

Data (معلومات) are 'facts' (حقائق) and 'statistics' (اعداد و شمار) collected together for reference or analysis. 'Facts' is the most fundamental definition.

To dampen (افسردہ کرنا) something (like spirits or enthusiasm) means to make it less strong or intense. It can 'depress' (مایوس کرنا) or subdue a feeling.

Cynical (کلبی) means believing that people are motivated purely by self-interest; distrustful of human sincerity. This often leads to a 'mocking' (طنز آمیز) or sneering attitude.

A cyclotron (سائکلوٹران) is a type of 'atomic-particle accelerator' (ایٹمی ذرات کو تیز کرنے والا آلہ) in which charged particles are propelled outwards from the center along a spiral path.

A cyclone (طوفان) is a large-scale system of winds rotating inward to an area of low barometric pressure. It is a type of severe 'storm' (طوفان باد و باراں).

Cybernetics (سائبرنیٹکس) is the science of 'communicating systems' (مواصلاتی نظام) and control systems in both living beings and machines.