How to sign: cause to open or to become open
"Mary opened the car door";
Similiar / Same: open up
Within this category: break open, click open, gap, lance, pry, reopen, unbar, unbolt, uncork, unlock, unseal
How to sign: not brought to a conclusion; subject to further thought
"an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined";
Similiar / Same: undecided, unresolved, undetermined