Definition from Wiktionary, the free dictionary
- IPA: /ˈminɪŋfʊl/
- Having meaning, significant.
- I think we made a meaningful contribution to this project today.
- 2012 June 9, Owen Phillips, “Euro 2012: Netherlands 0-1 Denmark”, BBC Sport:
- But the Danes remained resolute in defence - largely thanks to a spirited display by captain Daniel Agger - and they went ahead with their first meaningful attack.
Derived terms 
having meaning, significant