Significative

a.	1.	Betokening or representing by an external sign. The holy symbols or signs are not barely significative. - Brerewood.
	2.	Having signification or meaning; expressive of a meaning or purpose; significant. Neither in the degrees of kindred they were destitute of significative words. - Camden.

Adj.

1.

significative - (usually followed by `of') pointing out or revealing clearly; "actions indicative of fear" Synonyms: indicatory, revelatory, suggestive, indicative

indicative, indicatory, revealing, revelatory, suggestive