sealing

close enclose isolate plug secure shut stop

cork fasten gum paste plaster quarantine segregate stopper waterproof

stop up

begin continue let go open release start unplug

delay loosen put off refuse unseal

clinch conclude confirm establish ratify

assure attest authenticate consummate settle stamp validate

shake hands on

deny destroy disprove invalidate unsettle veto

delay loosen open put off refuse unseal