14:I[5014,["/_next/static/chunks/11d1gk4m2o846.js","/_next/static/chunks/14mrh2-p_w84d.js","/_next/static/chunks/40y9lkvta2o_p.js"],"default"] 15:I[38392,["/_next/static/chunks/11d1gk4m2o846.js","/_next/static/chunks/14mrh2-p_w84d.js","/_next/static/chunks/40y9lkvta2o_p.js"],"PracticeCard"] 17:I[70570,["/_next/static/chunks/11d1gk4m2o846.js","/_next/static/chunks/14mrh2-p_w84d.js","/_next/static/chunks/40y9lkvta2o_p.js"],"ExamAppearanceBadge"] 16:T526,The word opposite to 'skepticism' is- conviction.

Skepticism (noun)
Bangla Meaning: অবিশ্বাসপ্রবণতা; সংশয়বাদ।
English Meaning: an attitude of doubt or a disposition to incredulity either in general or toward a particular object.

Conviction (noun)
Bangla Meaning: কাউকে দোষী সাব্যস্তকরণ, দৃঢ় বিশ্বাস বা প্রত্যয়।
English Meaning: the act or process of finding a person guilty of a crime especially in a court of law.

Other options:
ক) Plausibility (noun)
Bangla Meani (noun)ng: আপাতগ্রাহ্যতা; সত্যাভাস।
English Meaning: the quality or state of being plausible

খ) Audacity (noun)
Bangla Meaning: দুঃসাহস; স্পর্ধা; ধৃষ্টতা; প্রগল্‌ভতা।
English Meaning: bold or arrogant disregard of normal restraints

ঘ) Reason (noun)
Bangla Meaning: কারণ; হেতু।
English Meaning: a statement offered in explanation or justification.

Source: Merriam-Webster Dictionary, Accessible Dictionary.