during
UK[ˈdjʊərɪŋ]US[ˈdʊrɪŋ]
prep
Throughout the course or duration of a period of time.
prep
At a particular point within the course or duration of a period of time.
Etymology
The word 'during' originates from the Middle English 'during', the present participle of the verb 'duren', which meant 'to last' or 'to endure'. This verb was borrowed from Anglo-French 'durer', itself derived from Latin 'dūrāre', meaning 'to harden, endure, or last'. The Latin root 'dūrus' (hard) provides the core semantic link of persistence through time. The grammatical evolution from a verb meaning 'to last' into a preposition indicating a temporal relationship is a classic example of functional shift, where the participle came to be used independently to mark the time frame in which an event occurs.
Analysis
The word 'during' is a simplex form derived from the present participle of the Middle English verb 'duren', meaning 'to last'. It is not productively formed from separable morphemes in modern English.
Examples
He slept soundly during the entire flight.
Please remain seated during the performance.
The power went out twice during the storm.