Answer:

spellout

Answer	Crossword Clue
SPELLOUT	Don't abbreviate
SPELLOUT	Clarify
SPELLOUT	Read letter by letter.

SPELLOUT	Explain fully.
SPELLOUT	Make clear
SPELLOUT	Make plain
SPELLOUT	Make crystal-clear
SPELLOUT	Explain in detail
SPELLOUT	Clearly explain addition in rant (5,3)