Use Of The A And An Questions Medium
You should use "an" before words starting with a silent "j." The use of "an" is determined by the sound of the following word, not the actual letter it starts with. Since the sound of a silent "j" is typically a vowel sound, "an" is used to maintain the smooth flow of speech. For example, you would say "an hour" because the "h" in "hour" is silent and the word starts with a vowel sound. Similarly, you would say "an honest person" because the "h" in "honest" is also silent.