Doubly and Trebly impossible if you were that object's own daughter.
"The Pastor's Wife"
Elizabeth von Arnim
It was Trebly important to Rose.
"Rose of Dutcher's Coolly"
Hamlin Garland
Polk's election gave an enormous impulse to the annexation movement, and made it doubly and Trebly difficult for any one to withstand it.
"Thomas Hart Benton"
Theodore Roosevelt