Relating to or connected with abiding; enduring, lasting, or capable of remaining stable or unchanged.
From abide (verb, meaning to remain or endure) plus -al suffix (forming adjectives meaning 'relating to'). A rare adjectival form that emphasizes permanence and stability.
This word almost never appears in modern English, yet it's perfectly grammatical—it shows that while English speakers understand suffix rules deeply, we rarely manufacture formal adjectives when simpler words like 'lasting' or 'enduring' already exist and sound more natural.
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