Another easy word game

FULgurated

Ratchet

HETerosexual

EXUltant

ULTimatum

IMAgination

NATurally

TURkey

KEYboard

BOAconstrictor

CONservation

ONCology

LOGarithm

ARImetics

METronome

TROpical

PICturesque

SQUalid

ALImentary

ENTertainer