Happening from time to time; at irregular intervals but not frequently.
From Latin 'occasionalis,' meaning 'happening by chance,' derived from 'occasio' (opportunity, occasion). It entered English in the 17th century through French, originally meaning 'incidental' before developing its temporal sense.
The word 'occasionally' beautifully captures the unpredictable nature of infrequent events - it suggests something that happens when the 'occasion' arises, emphasizing the circumstantial rather than scheduled nature of the occurrence.
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