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one word meaning lacking detail depending on the context of its use would be "spacey." as in "that explanation was kinda spacey." ~VAGUE is a good word meaning "Lacking Detail"~
The movie was really lacking in plot and originality.
The opposite of noble is ignoble, which means lacking honor or moral principles.
Apodal is the answer to this.
purposeless
Words that mean 'lacking enthusiasm' are lackadaisical or apathetic.
The word is "inexperienced."
The word is narrowness. It means not wide.
The word "colorless" includes a suffix ("-less") that means lacking or without.
Untrustworthy
Unmanned
weak or powerless.