A. Cramp
B. Prolong
C. Chop
D. Clip

Explanation:

The word curtail means to reduce, shorten, or limit something. In simple words: to make something smaller or cut it down.

The opposite of curtail is prolong, which means to make something longer or extend its time, duration, or length.

So, Prolong is the correct antonym of Curtail.

Real-Life Example

Imagine a school event:

• The principal decides to curtail the program because of bad weather (make it shorter).
• But if the event is going well, they may prolong it (make it longer).

Shorten = Curtail
Extend = Prolong

Main Points for Exams

• Curtail means to shorten, reduce, or limit something.
• It is often used for time, speech, expenses, or activities.
• Prolong means to extend or make longer.
• Cramp, Chop, and Clip all suggest reduction or restriction.
• Therefore, Prolong is the correct antonym of Curtail.
• This type of question is common in PPSC, FPSC, CSS, PMS, NTS, IELTS, TOEFL, and other competitive exams.

Quick Memory Trick

❌ Curtail = Cut Short
✅ Prolong = Make Long

Shorten ↔ Extend
Curtail ↔ Prolong ✔️