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 opposite of noble is ignoble, which means lacking honor or moral principles.
The movie was really lacking in plot and originality.
Words that mean 'lacking enthusiasm' are lackadaisical or apathetic.
Apodal is the answer to this.
purposeless
The word is "inexperienced."
The word is narrowness. It means not wide.
The word "colorless" includes a suffix ("-less") that means lacking or without.
Irreligious means not adhering to or practicing any specific religion or lacking religious beliefs or affiliations. It can also refer to a lack of reverence or respect for religious principles or practices.
Untrustworthy
Impulsive