...I was too proud of them; but under the circumstances it was dangerous—nay, suicidal—to appear doubtful or dubious of the road... 
Henry M. Stanley 「How I Found Livingstone」
...“Can ye trust yer dog keepin’ back?” inquired Joe, with a dubious glance at Crusoe...
R.M. Ballantyne 「The Dog Crusoe and his Master」
...To argue nebulously upon dubious premises likes me no better...
J. Henri Fabre 「More Hunting Wasps」
...A follower of the Caracci also, though of an uncertain school, wasGiuseppino da Macerata, whom a dubious tradition has assigned toAgostino...
Luigi Antonio Lanzi Thomas Roscoe 「The History of Painting in Italy, Vol. 2 (of 6)」
...There are indeed some pictures so dubious, thatthe experienced are in doubt whether to assign them to the master or thescholar...
Luigi Antonio Lanzi Thomas Roscoe 「The History of Painting in Italy, Vol. 2 (of 6)」
... He looked—well, he merely looked dubious, it’s the most I can say; so did the others...
Mark Twain (Samuel Clemens) 「A Connecticut Yankee in King Arthur’s Court, Complete」
...But Captain Blake shook a dubious head...
Various 「Astounding Stories of Super-Science, November, 1930」
...In Ferrok-Shahn, they have a dubious reputation at best;but I won't go into that...
Raymond King Cummings 「Wandl the Invader」
... Some ungainly critic has observed that the poet himselfseems to have felt a doubt on the matter, because he has supplementedthe dubious moonbeams by the "lantern dimly burning...
Robert Stawell Ball 「The Story of the Heavens」
...” He merely replied,with a dubious expression of face, “Oh!” but he ate hisshare of it as readily as anybody else...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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