significative
Significative is an adjective whose core meaning relates to meaning or significance. In English, it is uncommon and often considered archaic, formal, or technical; most contemporary writers would use significant when referring to importance, or meaningful when describing content or interpretation. When significative appears, it is typically in older writings, in translations from Romance languages, or in specialized discourse such as philosophy or semiotics where the emphasis is on signification rather than magnitude.
Etymology: significative derives from Latin significativus "serving to signify," from significare "to signify" with the suffix
Across languages, cognates are common: French significatif, Spanish significativo, Italian significativo. These forms are standard in
Usage notes: In statistical or empirical writing, "significant" is the proper term for indicating statistical significance;