• Alacrity
English Meaning: Liveliness and eagerness.
Bangla Meraning: তৎপরতা; সানন্দ আগ্রহ; কর্মচাঞ্চল্য; উদ্দীপনা।
Synonyms: alertness, avidity, briskness, cheerfulness, sprightliness, willingness.
Antonyms: apathy, aversion, slowness, dullness.
Other Options:
(ক) Admonish:
Meaning- Warn strongly; put on guard, to caution, advise, or counsel against something; সতর্ক করা।
Synonyms- berate, censure, chide, rebuke, reprimand, scold, warn, hoists.
Antonyms- approve, endorse.
(গ) Amorphous:
Meaning - lacking definite form; having no specific shape; formless; নির্দিষ্ট আকারহীন।
Synonyms- irregular, unformed, unshaped, shapeless, unshaped, formless, vague.
Antonyms - coherent, ordered, orderly, organized; clear, decided.
(ঘ) Assiduous:
Meaning - Marked by care and persistent effort; অধ্যাবসায়।
Synonyms - industrious, sedulous, diligent, indefatigable, laborious.
Antonyms - latent, quiescent, inoperative, inactive, adventitious.
Source: Accessible Dictionary by Bangla Academy and Oxford Learner's Dictionary.