lachèvement
Lachèvement is not a standard word in contemporary French. It is rarely found in dictionaries and, when encountered, is typically considered a misspelling or a nonstandard variant of achèvement, the common noun meaning the act of finishing or completing something.
Because achèvement is the normative form, most uses of lachèvement arise from typographical errors, OCR misreads,
In practice, lachèvement may appear in historical texts, regional writings, or as a proper noun in rare
For standard writing and communication, achèvement should be used to express the concept of completion or finishing