IPA: /ˈmiːnɪŋfəl/
KK: /ˈminɪŋfəl/
Full of significance or importance; something that has a clear purpose or meaning.
The teacher gave a meaningful explanation that helped the students understand the topic better.
Meaningful → It is formed from "mean" (from Old English *mǣnan*, meaning to signify or intend) and "-ful" (meaning full of). The word "meaningful" describes something that is full of meaning or significance.
Think of something that is 'full of' ('-ful') 'significance' ('mean') — that's why meaningful refers to something that has importance.
No commonly confused words.