hold-in

(v) close in; darkness enclosed him" enclose, confine,
(v) lessen the intensity of; temper; hold in restraint; hold or keep within limits
- moderate your alcohol intake
- hold your tongue
- hold your temper
- control your anger
curb, control, contain, moderate, check, hold,
(v) hold back; keep from being perceived by others
- She conceals her anger well
conceal, hold back,

enclose confine curb control contain moderate check hold conceal hold back

hold on hold up