Donald Trump has "lost the support and respect of a majority of Americans in his first year as president," a prominent pollster says in assessing the final survey research of 2017.

Peter Hart, a Democrat who helps conduct the nonpartisan NBC/Wall Street Journal poll, said his final survey shows that, "Both his job performance and personal approval ratings represent new lows. His average job approval rating for the year is 40 percent and his positive personal score was less than 40 percent for 11 of the past 12 months. Our focus groups for Emory University underscore that even Trump voters find him personally erratic."

Among the words used to describe him are: incompetent, bad, child like, troubled, loose cannon, despicable, cold, immature, narcissist, crazy, embarrassing, ignorant, and fights back, Hart told reporters in an email.

Only 26 percent of voters say he will be a successful president and 44 percent say he will be unsuccessful, with the remainder withholding final judgment, Hart noted.

In good news for Trump, 40 percent say he has "made the economy better" while 21 percent disagree. But other factors such as Trump's impulsiveness and perceived erratic behavior are overriding this relatively positive assessment on the economy, with the Democrats gaining an edge over Trump's Republicans on which party is better at dealing with the economy. About 63 percent say Trump's tax plan, approved by Congress this week, is "designed to benefit corporations and rich Americans."