authentically

• authentickly (obsolete)
• authenticly (dated)

From authentic +‎ -ally.

authentically (comparative more authentically, superlative most authentically)

1. In an authentic manner; genuinely
   • 1963, Hannah Arendt, On Revolution‎^[1], New York: Viking, published 1965, Chapter 6, section 4, p. 282:

     It is in the nature of all party systems that the authentically political talents can assert themselves only in rare cases, and it is even rarer that the specifically political qualifications survive the petty maneuvers of party politics with its demands for plain salesmanship.

   • 2003 12, Let's Go Inc., Let's Go Japan 1st Ed, Macmillan, →ISBN, page 151:

     Contrary to popular belief, sushi doesn't have to be served over a bar. A favorite place to get authentically sushified.

   • 2022 May 11, Peter Bradshaw, “Everything Everywhere All at Once review – nothing nowhere over a long period of time”, in The Guardian‎^[2], →ISSN:

     […] one genuinely shocking scene when Evelyn fat-shames her daughter – an authentically upsetting moment of family dysfunction that seems to come from another film, one in a parallel universe.

• “authentically”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.