不给力

lame (unimpressive) / a huge letdown / not to try at all

no; not so / (bound form) not; un-

to / for / for the benefit of / to give / to allow / to do sth (for sb) / (grammatical equivalent of 被) / (grammatical equivalent of 把) / (sentence intensifier)

to supply / to provide

cool / nifty / awesome / impressive / to put in extra effort

power / force / strength / ability / strenuously