meaningful

Concise Oxford English Dictionary © 2008 Oxford University Press:
meaningful/ˈmiːnɪŋfl/

▶adjective

• 1 having meaning.

  ■ Logic having a recognizable function in a logical language or other sign system.

• 2 worthwhile.

• 3 expressive: meaningful glances.

– derivatives
meaningfully adverb,
meaningfulness noun.