> On 14 Jan 2025, at 00:29, Brian Inglis via austin-group-l at The Open Group > <[email protected]> wrote: > > MW Collegiate has both implementer and implementor with no distinction. > OED has implementer with implementor as variant. > Oxford Reference says: > Although the variant spelling implementor predominated for much of the late > 20th century, today implementer is considered standard. Current ratio: 4:1. > It appears there is little difference between American and British English > where implementer is equally common.
In the n-gram search below, “implementor” has a peak 1990, but is now down below the 1962 level, whereas “implementer” has a rapid increase since 1996, and is contemporary more than 10 times more common. https://books.google.com/ngrams/graph?content=implementor%2Cimplementer&year_start=1800&year_end=2022&corpus=en&smoothing=3
