noun
merits and demerits; pros and cons; advantages and disadvantages
Colloquial abbreviation from メリット (merit) + デメリット (demerit). Used in casual conversation to weigh both sides of something.
転職のメリデメを紙に書き出してみた。
I wrote down the pros and cons of changing jobs on paper.
このプランのメリデメを教えてください。
Please tell me the advantages and disadvantages of this plan.