dubious

/djˈuːbɪəs/

/ˈdubiəs/

dubious

not having reached a conclusion about something being true, good, or if it should be done

synonyms : doubtful

likely to be dishonest

synonyms : doubtful

(of a person) unsure of the credibility of something; uncertain whether or not something is good

Examples

1. The real history of the Trojan War is dubious at best.

2. The claims of human-alien cooperation are also dubious at best.

3. Some of the others, the ministry, their motivations are dubious.

4. And some people on the science team, or on the engineering team, were dubious.