Answer: antijam

AnswerCrossword Clue
ANTIJAMPreventing stoppages
antijamof the same kind but situated opposite, exerting energy in the opposite direction, or pursuing an opposite policy anticlinal
antijamblocking interfering signals
antijamposing or hostile to in opinion, sympathy, or practice anti-Semite
antijamposing in effect or activity antacid