Free from boasting; humble and without bragging or exaggeration.
From 'boast' plus the suffix '-less,' meaning 'without' or 'lacking.' The '-less' suffix comes from Old English 'leas' and is one of English's most productive negation mechanisms.
The '-less' suffix is so intuitive that English speakers coin '-less' words constantly: 'powerless,' 'careless,' 'dreamless.' It's been productive for over a thousand years because it's so logical—missing a thing just means 'less' of it.
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