What Does Lief Mean?

As an adjective, the word "lief" is outdated. The meaning of lief was "eager or willing." Here is a sentence which shows the usage of the word in an apt manner:

The lief Andrew was always seen hanging outside his office to lend a helping hand to his friends

The adverb "lief" means "in a willing manner." Here is a sentence which with the word "lief" used as an adverb:

The little boy would as lief, hit the button sooner or later.  The word "lief" entered popular English in the later half of the 14the century.

Lief Larson is one of the youngest and recognized entrepreneurs in the world. As a futurist and a technologist rolled in one, this young businessman who is barely 31 is credited with being a co-founding member of 9 companies.