Words similar to dubious

Example sentences for: dubious

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

The story reports one countermeasure the Federal Trade Commission has put into play: the establishment of a "teaser sting site" (one of a dozen relating to various spurious health claims and get-rich-quick schemes) that promotes fake impotence and sex aids but leads to nothing more than a warning that such e-commerce is dubious.
Doesn't it just transfer the legally dubious extra-academic evaluations from the admissions committee to the test designers?
Ol' Dickie, we were told, was a printer from Mexia, a tiny Texas town whose previous claim to fame had been that it was the birthplace of Anna Nicole Smith (which itself is one for the Hall of Dubious Distinctions).
We have identified many initially dubious AroQ hits to BLAST queries by alignment of amino-acid residues known to be critical for catalysis.
But what's the rationale for separate biographical entries on Queen Latifah, Snoop Doggy Dog, Tupac Shakur, and a host of other dubious thugs?