When something is important or significant, it is meaningful, or "full of meaning." Meaning itself comes from the word mean, which has its roots in the Old English mænan, "to signify, tell, or complain."

What creates a meaningful life?

Life is meaningful, they say, but its value is made by us in our minds, and subject to change over time. Landau argues that meaning is essentially a sense of worth which we may all derive in a different way—from relationships, creativity, accomplishment in a given field, or generosity, among other possibilities.

What word means meaningful?

consequential, essential, important, purposeful, relevant, serious, substantial, useful, valid, worthwhile, allusive, big, clear, concise, considerable, deep, eloquent, exact, explicit, expressive.