Crossword Clue:

with a hint to four pairs of answers in this puzzle

AnswerCrossword Clue
LOCOOff one's rocker, and a hint to what the four longest puzzle answers have in common
LEMONADEPicnic serving, and when divided properly, a hint to a hidden feature of six pairs of puzzle answers
TBIRDFord spanning 50 years, or a hint to the four intersecting pairs of answers to starred clues
ETTUWords of reproach, and a hint to how the four longest puzzle answers are formed
NETGAINTaxable amount ... and a hint to the four longest puzzle answers
SWITCHHITSwing both ways, and a literal hint to how four puzzle answers were created