accidents will happen

accidents (will) happen

Mishaps and setbacks are just a natural and inevitable part of life. This phrase is often said in an attempt to comfort someone after an accident has happened. A: "I am so sorry that I backed into your car!" B: "That's OK, accidents will happen." I know you didn't mean to spill your juice, sweetheart—accidents happen.
See also: accident, happen
Farlex Dictionary of Idioms.

Accidents will happen.

Prov. It is impossible to completely prevent things from going wrong. (Often used to console someone who has made a mistake or caused an accident.) Child: Mommy, I spilled grape juice all over the carpet! Mother: Don't cry, honey. Accidents will happen. Jill: I'm so embarrassed. I was just tapping on your window to wake you up. I didn't mean to break it. Jane: Accidents will happen.
See also: Accident, happen, will
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

accidents will happen

People say accidents will happen to mean that accidents are a normal part of life and you should not blame anyone or be too upset about them. One of the things our society will not appreciate is that accidents will happen. We still look for meaning when pointless tragedy occurs.
See also: accident, happen, will
Collins COBUILD Idioms Dictionary, 3rd ed.

accidents will happen

however careful you try to be, it is inevitable that some unfortunate or unforeseen events will occur.
This phrase is a shortened form of the early 19th-century proverb ‘accidents will happen in the best regulated families’.
See also: accident, happen, will
Farlex Partner Idioms Dictionary

ˌaccidents will ˈhappen

(saying) said when a small accident has happened, for example when something has been broken, to show that you do not consider it to be serious, or to excuse yourself for causing it: ‘I’m so sorry, I’ve just broken a plate.’ ‘Oh, never mind, accidents will happen.’
See also: accident, happen, will
Farlex Partner Idioms Dictionary
See also:
  • accidents (will) happen
  • that's the way life is
  • keep at
  • keep at (someone or something)
  • beck and call
  • (as) sure as eggs (is eggs)
  • a penny for them
  • be twiddling (one's) thumbs
  • be twiddling your thumbs
  • 57