lax

adjective
1
not strict, severe or careful enough about work, rules or standards of behaviour
سهل‌انگار, بی‌قید, مسامحه‌کار, غیرسختگیر, سهل‌گیر
synonym slack, careless
2
relaxed
بی‌خیال, آسان‌گیر
Her body went completely lax in his arms.
The glass dropped from his lax fingers onto the floor.
opposite tense
3
produced with the muscles of the speech organs relaxed
شل, سست
opposite tense