"More picky-picky" is a phrase used to describe someone who is excessively critical and hard to please. Synonyms for this phrase can include "nitpicky," "finicky," "persnickety," "fastidious," "precise," "exact," "meticulous," "demanding," "perfectionistic," and "choosy." These words all capture the essence of someone who is not easily satisfied and has high standards. Whether it be in regards to food, clothing, or even relationships, being labeled as "more picky-picky" suggests that the person is difficult to please and requires a lot of attention to detail. So the next time someone is described as such, you can interchangeably use any of these synonyms to convey the same message.