Found 6 Strong's definitions.

1. 1

   G3689: ὄντως (óntōs)

   adverb of the oblique cases of ὤν; really:--certainly, clean, indeed, of a truth, verily.

   100%
2. 2

   G1104: γνησίως (gnēsíōs)

   adverb from γνήσιος; genuinely, i.e. really:--naturally.

   55%
3. 3

   G230: ἀληθῶς (alēthōs)

   adverb from ἀληθής; truly:--indeed, surely, of a surety, truly, of a (in) truth, verily, very.

   50%
4. 4

   G227: ἀληθής (alēthḗs)

   from Α (as a negative particle) and λανθάνω; true (as not concealing):--true, truly, truth.

   5%
5. 5

   G281: ἀμήν (amḗn)

   of Hebrew origin (אָמֵן); properly, firm, i.e. (figuratively) trustworthy; adverbially, surely (often as interjection, so be it):--amen, verily.

   5%
6. 6

   G225: ἀλήθεια (alḗtheia)

   from ἀληθής; truth:--true, X truly, truth, verity.

   5%