You use excepting to introduce the only thing that prevents a statement from being completely true.
[formal]
The source of meat for much of this region (excepting Japan) has traditionally beenthe pig.
excepting in British English
(ɪkˈsɛptɪŋ)
preposition
1.
excluding; except; except for (esp in the phrase not excepting)
conjunction
2. an archaic word for unless
▶ USAGE The use of excepting is considered by many people to be acceptable only after not, only, or without. Elsewhere except is preferred: every country agreed to the proposal except (not excepting) Spain; he was well again except for (not excepting) a slight pain in his chest
excepting in American English
(ɛkˈsɛptɪŋ; ɪkˈsɛptɪŋ)
preposition, conjunction
except
In other languages
excepting
British English: excepting PREPOSITION
You use excepting to introduce the only thing that prevents a statement from being completely true.
There was no noise, excepting his neighbour's voice.