Collocations for fatal - adj.

be, prove

near
He has not driven since his near fatal crash earlier this year.

always, invariably, universally | often, sometimes, usually | rarely | potentially
The disease is potentially fatal.

for
This kind of accident is almost always fatal for the pilot.

to
a chemical which is invariably fatal to small mammals

be, prove

absolutely | ultimately
Her disregard of this advice was ultimately fatal.

to
Tax increases have proved fatal to the nation''s business community.