look suspiciously like (something)
1. To bear a strong or striking resemblance to something. A cow on our farm has a mark on its side that looks suspiciously like the prime minister. His tattoo looks suspiciously like the crest of my old boarding school.
2. To be or look so similar to something that it is, could be, or borders on plagiarism. The movie's promotional material all looks suspiciously like the blockbuster from earlier in the year. It seems like they're trying to cash in on that movie's success. Your test answers looked suspiciously like Marten's, so I'm having you both take a new test in rooms by yourselves.
sound suspiciously like (something)
To sound very similar to something, perhaps to the point of plagiarism. The main chorus in this song sounds suspiciously like that hit single from 1978.