Susceptible (حساس) means likely to be harmed or influenced by something; 'defenceless' (غیر محفوظ) or vulnerable. 'Insensitive' (بے حس) is an antonym.

Surreptitious (خفیہ) means kept 'secret' (پوشیدہ), especially because it would not be approved of.

Surplus (اضافی) is an amount left over when requirements have been met; 'extra' (زائد) or excess.

To surmount (قابو پانا) means 'to overcome' (فتح پانا) a difficulty or obstacle.

To surmise (قیاس کرنا) means to suppose that something is true without having evidence. 'Guess' (اندازہ لگانا) is a direct synonym.

Supple (لچکدار) means bending and moving easily; 'flexible' (نرم). 'Stiff' (سخت) is the antonym.

To supplant (جگہ لینا) means to supersede and 'replace' (تبدیل کرنا) someone or something, often by force or treachery.

Sumptuous (پرتکلف) means 'splendid' (شاندار) and expensive-looking; luxurious. 'Meagre' (کم) is the antonym.

A summit (چوٹی) is the highest point or 'top' (بلندی) of a hill or mountain. 'Slope' (ڈھلوان) is the side.

Sultry (حبس بھرا) (of weather) means 'hot and moist' (گرم اور مرطوب) or humid.