痛痛快快

immediately / without a moment's hesitation / with alacrity / firing from the hip

ache / pain / sorrow / deeply / thoroughly

delighted / to one's heart's content / straightforward / also pr. [tong4 kuai5]

rapid / quick / speed / rate / soon / almost / to make haste / clever / sharp (of knives or wits) / forthright / plainspoken / gratified / pleased / pleasant