stand out like a sore thumb
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Related to stand out like a sore thumb: all thumbs, worse for wear, in the wrong, ahead of schedule
stand/stick out like a sore thumb
if someone or something sticks out like a sore thumb, everyone notices them because they are very different from the other people or things around them Everyone else was in jeans and casual gear and I had my office clothes on - I stuck out like a sore thumb.