The synonym of “Stringent” is-

Stringent (Adjective):
Meaning - (of regulations, requirements, or conditions) strict, precise, and exacting.
বাংলা অর্থ - কঠোর; সুদৃঢ়; অবশ্য পালনীয়; কড়া; কট্টর
Synonym: strict, firm, rigid, rigorous, severe, harsh, tough, tight, exacting, demanding, inflexible, stiff, hard and fast, uncompromising, draconian, extreme

অন্যদিকে,
- Shrill অর্থ কর্কশ,
- Dry অর্থ শুকনা,
- Strained অর্থ আন্তরিকতা শূন্য।

Source: Oxford Advanced Learner's Dictionary