What are the best answers for “in an unalterable and unchangeable manner”?

immutably, unalterably, unassailably, unchangeably.

How many letters does the top answer for “in an unalterable and unchangeable manner” have?

The most common answer is immutably (9 letters).

4 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

immutably 9 letters wn-def

in an unalterable and unchangeable manner

unalterably 11 letters wn-def

in an unalterable and unchangeable manner

unassailably 12 letters wn-def

in an unalterable and unchangeable manner

unchangeably 12 letters wn-def

in an unalterable and unchangeable manner