unchecked

1. ADJ If something harmful or undesirable is left unchecked, nobody controls it or prevents it from growing or developing. 未受遏制的; 未加制止的

If left unchecked, weeds will flourish. 如果不加遏制，雜草就會(huì)瘋長(zhǎng)。

...a world in which brutality and lawlessness are allowed to go unchecked. …一個(gè)野蠻與無法無天橫行無阻的世界。