drop off the radar

Become completely untraceable

To drop off the radar is to become undetectable or unnoticed, like an aircraft disappearing from tracking screens.

Someone who drops off the radar stops being visible in their usual circles—they stop calling, posting, or showing up: He dropped off the radar after the breakup.

The phrase often implies deliberate withdrawal or mysterious absence.

Related

neglected · faded · invisible · absent · withdrawn · forsaken · disregarded · incommunicado · radio silence · out of touch · forgotten · off-grid · off the grid · ghosted · gone · evaporated · lost · unacknowledged

Opposites
visibility/attention

drop off the radargo viral

Spread rapidly online

make a splash · hit the headlines · make waves · attract attention · turn heads

contact/communication

drop off the radarresurface

Appear again after absence

reappear · reach out · reconnect · check in

activity/engagement

drop off the radarmake a comeback

reemerge · keep one's hand in · get involved · keep at it · resurface

Family

drop, drops, dropped, dropping, dropper, droplet, radar, radars

Familiarity
Top 100,000
Profile
Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G