Answer:

FAULT

Answer	Crossword Clue
FAULT	Seismologist's concern
FAULT	Bad serve
FAULT	Poor service

FAULT	Shortcoming
FAULT	Censure
FAULT	Geological concern
FAULT	Responsibility
FAULT	Court official's call
FAULT	Mistake
FAULT	Quake site
FAULT	Criticize

FAULT	Blame
FAULT	Tennis server's goof
FAULT	Quake spot
FAULT	Double ...
FAULT	Earthshaking matter?
FAULT	Seismological concern
FAULT	No- ... insurance
FAULT	Culpability

FAULT	Rock fracture
FAULT	Tennis miscue
FAULT	Geologic fracture
FAULT	Tennis umpire call
FAULT	"It's my .." (blame-taking phrase)
FAULT	Failure.
FAULT	Blemish.
FAULT	Culpability.

FAULT	Dislocation of a rock stratum.
FAULT	Tennis error.
FAULT	Tennis serve in the wrong court.
FAULT	Flaw.
FAULT	Fracture in the earth's crust
FAULT	Imperfection
FAULT	Rift
FAULT	Earthquake line

FAULT	Quake locale
FAULT	Tennis "misstep"
FAULT	Wimbledon no-no
FAULT	Geologist's big break?
FAULT	Denali National Park sits on one