いちごんすでにいずればしばもおいがたし

Japanese edit

For pronunciation and definitions of いちごんすでにいずればしばもおいがたし – see the following entry.
一言既に出ずれば駟馬も追い難し
[proverb] a word once spoken is hard to catch even with a four-horse carriage; a word once spoken cannot be undone
(This term, いちごんすでにいずればしばもおいがたし, is the hiragana spelling of the above term.)