not a little

not a little

A lot; a great deal. Your unexpected absence caused not a little tension among the board members, so I'd apologize to them immediately, if I were you.
See also: little, not
Farlex Dictionary of Idioms.
See also:
  • apologize for
  • stroke of fortune
  • stroke of luck
  • a stroke of luck
  • I beg your pardon
  • I beg yours
  • (one's) jaw drops
  • how dare you, etc.
  • words stick in (one's) throat
  • have words stick in throat
References in periodicals archive
Earth to Libra gal--you're not a little girl anymore, so do your best to work things out with buds in a new-and-improved mature way.