This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Present participle of form.

n. The act or process of giving form or shape to anything; as, in shipbuilding, the exact shaping of partially shaped timbers.

"The film is continually suggesting trios; the ménage à trois is its underlying structure, from the title forming a threesome between the girls and the city, to the shifting romantic dynamics between the girls, Juan Antonio, and his wild, passionate ex-wife Maria Elena Penélope Cruz."

form   

conforming    informing    misinforming    nonperforming    norming    performing    reforming    storming    swarming    transforming