meaningful
[adjective]
Synonyms: significant, important, material, purposeful, relevant, useful, valid, worthwhile

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Antonyms: meaningless

[TahlilGaran] English Synonym Dictionary ▲

mean‧ing‧ful /ˈmiːnɪŋfəl/ adjective
[Word Family: adjective: meaningful, meaningless; verb: mean; noun: meaning; adverb: meaningfully]

1. having a meaning that is easy to understand and makes sense:
Without more data we cannot make a meaningful comparison of the two systems.
Teaching history to five-year-olds in a meaningful way can be very difficult.
meaningful to
Rules must be put in a context that is meaningful to the children.

2. meaningful look/glance/smile etc a look that clearly expresses the way someone feels, even though nothing is said:
Sam and Barbara exchanged meaningful glances.

3. serious, important, or useful:
They want a chance to do meaningful work.
I want a mature and meaningful relationship.
a meaningful conversation
—meaningfully adverb

[TahlilGaran] Dictionary of Contemporary English ▲