A. Upsetting
B. Shy
C. Responsible
D. Polite

Explanation:

The word diffident means shy, lacking self-confidence, or hesitant because of self-doubt.

In simple words: not confident.

So, the synonym of diffident is shy.

Real-Life Example

• She was too diffident to speak in front of the class.
• She was too shy to speak in front of the class.

Lacking confidence = Diffident

Main Points for Exams

• Diffident means shy, timid, or lacking self-confidence.
• Shy is its correct synonym.
• Other options are unrelated meanings.
• Therefore, Option B is correct.
• Frequently asked in PPSC, FPSC, CSS, PMS, NTS, IELTS, and TOEFL vocabulary tests.

Quick Memory Trick

😊➡️😳 Diffident = Lacking Confidence
🙈 Shy = Same Meaning

Confident ↔ Diffident
Diffident ↔ Shy ✔️