New York Public Library - 5th Avenue @ 42nd Street - map it here
Doubtful (incertain). This is the word that you can read on the top right corner of the dictionary page from which I am taking this picture.
Doubtful. Like the weather that we experienced all day today. Will it rain? Maybe. Will it stop raining? Maybe. Will it rain again? Maybe. Will it continue raining tomorrow? Maybe. And the day after? Maybe.
Ah well, let's keep our noses in the pages of a good book!