How many letters does the top answer for “another word for plastic” have?

The most common answer is formative (9 letters).

Crossword clue: another word for plastic

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

formative 9 letters gen-syn

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

shaping 7 letters gen-syn

any process serving to define the shape of something

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase