The eight-foot-tall, hot pink statue of Minnie Mouse did not belong among the beige couches of the fancy living room. The statue was obtrusive, meaning it stood out in a bad way.
Something that obtrudes sticks out, like a sore thumb. Wearing a snow suit and skis to your neighbor's pool party, or bringing steak tartare to a vegan potluck — these are examples of obtrusive behavior, which draws attention to you and makes you stick out, but not in a good way.