Does 4 have anything to do with HIN/HINI, the elvish word for children?
Entrance could be 'door' or maybe just 'in.'
But in just one sense of the word, confusion is lacking.
And how to synonymise 'suddenly,' unless it's just that one of the elements ends or cuts off abruptly? I thought of 'now' as a sort of synonym, but can't work it in.