lemming-like Definition

lemming
noun

1. A small burrowing rodent, native to northern regions of Europe, Asia and N America, which occasionally participates in huge migrations once popularly but erroneously believed to result in mass drownings at sea.
2. Someone who blindly follows other people on a course to predictable disaster.

Derivative: lemming-like
adverb

Foolishly and without thinking.

Etymology: 16c: Norwegian lemmen.