Words similar to doubtful

Example sentences for: doubtful

How can you use “doubtful” in a sentence? Here are some example sentences to help you improve your vocabulary:

The newsweeklies all run worried, doubtful cover stories on the Kosovo war and eavesdrop on the high-level conversations behind it.
If the Nazi state had rested only on coercion, it's doubtful that Hitler could have persuaded millions of Germans to remain loyal to him, and to fight heroically to the end of the war.
Many are doubtful that increased direct funding would generate sufficient incentives or be managed efficiently enough.
, when consumers demand anti-malarial drugs of doubtful efficacy).
Given the steady decline in the personal saving rate, it is doubtful that Americans would willingly reduce consumption so much that the nation would be at risk of saving too much.