Lacking a front; without a forward-facing surface or section.
From 'front' (forward part) + '-less' (suffix meaning without). This formation follows standard English adjective patterns.
Linguists call '-less' one of the most productive suffixes in English because you can attach it to almost any noun to create an adjective meaning 'without'—'frontless,' 'homeless,' 'fearless'—making it easy for speakers to invent new words on the fly.
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