The human cost of low wages is obvious and has been extensively documented.
Navy researchers have extensively studied how to build “unit cohesion.”
But al Qaeda has also targeted Israel and Jews extensively over the last decade.
"vast, far-reaching;" c.1600 of immaterial, c.1700 of material things; from Late Latin extensivus, from extens-, past participle stem of Latin extendere (see extend). Earlier in a medical sense, "characterized by swelling" (early 15c.). Related: Extensively; extensiveness.