masc nom sg of allīna (pp)
Analysis. a- (not) + llīna (stuck), meaning 'not stuck' in the sense of 'come loose' or 'detached', but reanalyzed in positive sense as 'stuck fast' through folk etymology or prefix phonetic erosion; the word functions as past participle expressing the state of adhesion.
Etymology. The prefix a- (not, without) is likely here reanalyzed or contracted. The root is √lī (to adhere, stick, cling), which connects to Sanskrit līyate and Latin linis (thread, that which clings). The semantic shift from 'not-stuck' to 'stuck' may reflect either metanalysis of an older negative form or a separate formation. The concrete image is physical adhesion, from which the abstraction of attachment and reliance develops.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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