Answer: secondly

AnswerCrossword Clue
SECONDLY"And furthermore..."
SECONDLY"As a followup to that..."
SECONDLYIn addition (used in a series).
SECONDLYIn addition.
SECONDLYNext
SECONDLY"For another thing ..."
SECONDLYIn the next place
SECONDLYIt follows "First of all ..."
secondlyIn the second place (used to introduce a second point or reason)
secondlyin the next place after the first