Found 2 items, similar to forcefulness.
English → English (WordNet) Definition: forcefulness forcefulness n : physical energy or intensity; “he hit with all the force he could muster”; “it was destroyed by the strength of the gale”; “a government has not the vitality and forcefulness of a living man” [syn: force, strength]
English → English (gcide) Definition: forcefulness forcefulness \forcefulness\ n. physical energy or intensity. Syn: force, strength. [WordNet 1.5]