strict的近義詞是什麼

近義詞是rigorous，例如：

1、Guests without invitations have to undergo rigorous safety checks.沒有邀請函的客人要接受嚴格的安全檢查。

2、Was it a curriculum that appeared more rigorous， perhaps?或許是一門看似更為嚴格的課程?

3、The work failed to meet their rigorous standards.工作沒有達到他們的嚴格標準。