The synonym of the word 'Gigantic' is -

• Gigantic (Adjective).
- English meaning: Extremely large.
- Bangla meaning: বিশালাকার; প্রকাণ্ড; দানবীয়।

• Synonym: Huge, Giant, Vast, Massive.
• Antonym: Tiny, Miniature, Minuscule, Diminutive.

• উল্লিখিত অপশনগুলো,
- Separate - পৃথক, আলাদা;
- Clemency - নম্রতা, কোমলতা;
- Enormous - প্রচুর, বিরাট;
- Diminutive - অতি ক্ষুদ্র।

• Example sentence:
- They built a gigantic shopping mall near the highway.
- A gigantic elephant stood in the middle of the road.

Source: Merriam & Webster Dictionary, Oxford Dictionary, Accessible Dictionary.