一股腦 [－－脑]

Jyutping jat1 gu2 nou5
Pinyin yī gǔ nǎo

Definitions (CC-CEDICT)
  1. all of it
  2. lock, stock and barrel
Definitions (Wiktionary)
  1. adv, colloquial
    altogether; all at once
    (syn.) 全都, 尽都, 统统, 通通, 盡都, 全部, 統統