I’ve noticed a couple of examples of copy on the Internet lately, where “interpret” has been confused with “interrupt”. The latest example was in a FAQ-style medical fact sheet, with one of the questions reading: “How do I interrupt that Anti-Mullerian hormone result?”.
How do these two words get confused? Even when you say them aloud, correctly pronounced, to my ear at least, they don’t sound the same. So maybe that’s the key: mispronunciation may invite incorrect spelling!