How many letters does the top answer for “the act of making a mummy.” have?

The most common answer is mummification (13 letters).

Crossword clue: the act of making a mummy.

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

mummification 13 letters web-def

embalmment and drying a dead body and wrapping it as a mummy

the act of making a choice 50% similar → willing

the act of making a film 50% similar → cinematography, filming

the act of making a speech. 50% similar → speeching

the act of making cold. 50% similar → frigefaction

the act of making concave. 50% similar → concavation

the act of making copies 50% similar → replication

the act of making into a castle. 50% similar → castellation

the act of making lawful 50% similar → legalisation, legalization, legitimation