The phrase "irretrievable breakdown" means that something has reached a point where it is completely broken and cannot be fixed or repaired. Full definition
You must also fill out financial statements, a certificate of absolute divorce and an affidavit of irretrievable breakdown of marriage. (info.legalzoom.com)
You can file for irretrievable breakdown of the marriage, or mental incapacity on the part of your spouse. (info.legalzoom.com)
In England, Wales and Northern Ireland, two years» separation is required to prove irretrievable breakdown with consent and five years» without. (newlawjournal.co.uk)