not half as good, nice, etc. as somebody/something

not half as (something) (as someone or something)

Not possessing nearly as much of some quality or characteristic as someone or something else. I enjoy playing tennis, but I'm not half as good as my brother. The movie's nearly an hour longer than the last one, and it's not half as exciting.
See also: half, not, someone
Farlex Dictionary of Idioms.

not ˈhalf as good, nice, etc. as somebody/something

not nearly as good, nice, etc. as somebody/something: She’s not half as nice as her sister. His new book isn’t half as interesting as his last one.
See also: half, not, somebody, something
Farlex Partner Idioms Dictionary
See also:
  • (I) hope not
  • hope not
  • not for a second
  • not for a minute
  • not for a moment
  • aint
  • ain't
  • be not much cop
  • not for a instant
  • not for a/one minute/moment/second/instant