altogether

1. entirely, completely

• After his injury, he stopped playing badminton altogether.

2. including everything

• Penny owed Leonard $268 altogether.

3. considering everything; on the whole =all in all

• Lots of sunshine, wonderful food, and amazing nightlife - altogether a great vacation!

in the altogether: not wearing any clothes

苏小姐觉得鲍小姐赤身露体，伤害及中国国体。那些男学生看得心头起火，口角流水，背着鲍小姐说笑个不了。有人叫她“熟食铺子"(charcuterie)，因为只有熟食店会把那许多颜色暖热的肉公开陈列；又有人叫她真理”，因为据说“真理是赤裸裸的”。鲍小姐并未一丝不挂，所以他们修正为“局部的真理”。--《围城》，钱钟书

All together means 'all at the same time' or 'all in the same place'. e.g.

• It was lovely to have the family all together again.
• Because they shared a car, they all arrived together.