verily

Mane (Îngilîzî)

1. (archaic, not-comparable) Truly; doubtlessly; honestly; in truth.
2. (archaic, not-comparable) confidently, certainly

Têgeh

île

Hevwate

indeed

certainly

truly

really

surely

forsooth

truthfully

assuredly

in truth

just

perfectly

positively

seraphically

solely

totally

veritably

wholly

without a doubt

in all likelihood

I swear that

undoubtably

undoubting

to be sure

undilutedly

actually

undoubtfully

chastely

doubtless

doubtlessly

indubitably

in fact

innocently

in reality

Werger

vraiment

véritablement

wahrlich

sahiden

verdaderamente

hakikaten

indubitablement

absolument

assurément

in verità

verdadeiramente

doğrusu

filvaki

vollkommen

Wekî (IPA) tê bilêvkirin

/ˈvɛɹ.əl.i/

Etîmolojî (Îngilîzî)

Ji Middle English mîras hatiye girtin: verraily

In summary

From Middle English verraily, from verray (“true, very”) + -ly. More at very, -ly.