Answer:

EST

AnswerCrossword Clue
ESTNE clock setting
ESTBusiness-sign abbr.
ESTExaggerator's suffix
ESTGrand finale?
ESTGuinness Book suffix
ESTPA time zone, sometimes
ESTSuperlative suffix
ESTWinter clock setting in VT
ESTWintertime in DC
ESTBiblical suffix
ESTFormer U.S.S.R. member
ESTFormer USSR member
ESTHrs. in NY
ESTIncomparable ending
ESTN.E. clock setting
ESTNYC zone
ESTRecord-book suffix
ESTTime in Augusta: abbr.
ESTTime in NYC
ESTWinter clock setting in ME
ESTWinter clock setting in PA
ESTA winter hour
ESTPart of i.e.
ESTRepairman's fig.
ESTSuperlative ending
ESTWintertime on Cape Cod
ESTBallpark fig.
ESTBallpark guess: Abbr.
ESTBeyond -er
ESTPart of ETA, briefly
ESTVirginia zone
ESTPhila. clock setting
EST"To the max" suffix
ESTCornerstone letters
ESTGuess (abbr.)
ESTId ..
ESTErrare humanum ..
ESTApprox.
ESTFounded (abbr.)
ESTIs Latinized