Full of belief, conviction, or faith in something.
From belief (Middle English, from be- + lief, 'dear' or 'pleasing,' from Old English leof) + -ful (suffix meaning 'full of'). The word evolved to mean 'what is dear to one's mind' and eventually 'conviction or faith.'
The word 'belief' traces back to what's 'lief' or dear to us—so something 'beliefful' isn't just true, it's something you hold dear! That's why belief is so personal and powerful; it starts with what matters most to your heart.
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