What are the best answers for “the act of starting something for the first time; introducing something new”?

founding, instauration, origination.

How many letters does the top answer for “the act of starting something for the first time; introducing something new” have?

The most common answer is founding (8 letters).

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

founding 8 letters wn-def

the act of starting something for the first time; introducing something new

instauration 12 letters wn-def

the act of starting something for the first time; introducing something new

origination 11 letters wn-def

the act of starting something for the first time; introducing something new