spell out

verb

1. To form (a word) from letters; say the letters in a word.

   “He used Scrabble tiles to spell out “I LOVE YOU”.”

2. To replace an acronym with its expansion.

   “To avoid crypticness for nonexpert readers, she spelled out the phrase, so that "tips about PrEP in the context of OHS for HCPs" became "tips about preexposure prophylaxis in the context of occupational health and safety for health care professionals".”

3. To explain in clear and simple terms; to be explicit.

   “Here is a brochure that spells out the benefits.”

   “Dany has never had a full vision for what happens once she obtains the Iron Throne, but that’s what her advisors, including Tyrion and Varys, are for. And the show has never exactly spelled out Jon’s platform beyond “stay alive,” so he’d also require a small council.”