The story
- Scots · derived fromfog“moss; lichen”
- Scots · borrowed fromfoggie
- English todayfogey
Borrowed from Scots foggie, fogie (noun), perhaps derived from Scots foggie (“covered with moss or lichen; mossy", hence "old, antiquated, decrepit”, adjective), from Scots fog (“moss; lichen”), equivalent to fog (“moss”) + -y. Further origin uncertain. More at fog.
Etymology from Wiktionary, CC BY-SA 4.0.