How many letters does the top answer for “forming or capable of forming or molding or fashioning” have?

The most common answer is formative (9 letters).

Crossword clue: forming or capable of forming or molding or fashioning

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

formative 9 letters wn-def

minimal language unit that has a syntactic (or morphological) function

plastic 7 letters wn-def

generic name for certain synthetic or semisynthetic materials that can be molded or extruded into objects or films or fi

shaping 7 letters wn-def

any process serving to define the shape of something