The story
From fixed (“not changing; not able to be changed, staying the same”) + -ly (suffix forming adverbs from adjectives).
Etymology from Wiktionary, CC BY-SA 4.0.
fixedly
fix·ed·lyToday it means: Firmly, resolutely. Full definition →
Today it means: Firmly, resolutely. Full definition →
From fixed (“not changing; not able to be changed, staying the same”) + -ly (suffix forming adverbs from adjectives).
Etymology from Wiktionary, CC BY-SA 4.0.