1 empty, plain, bare:
I stared at the blank paper, unable to write even my name.
2 unornamented, unadorned, undecorated, void:
Whenever Irena sees a blank wall she feels compelled to hang a painting on it.
3 vacant, empty:
The actor's mind went completely blank -- he had forgotten his lines.
4 passive, impassive, expressionless, emotionless, vacuous, mindless, unexpressive:
He gave us a blank look when asked about the missing rare stamps.
5 disconcerted, discomfited, nonplussed, confused, helpless, resourceless, perplexed, dazed, bewildered:
The two old men looked at each other with blank and horror-stricken faces.
6 unrelieved, stark, sheer, utter, pure, unmixed, absolute, unqualified:
Jack faced the blank prospect of solitary confinement.
7 space; line, box:
Please fill in the blanks on the form.
8 nothing, zero, nil; void, emptiness:
I asked her when the baby was coming, but I drew a blank.