Answer:

achiest

AnswerCrossword Clue
ACHIESTSore to the max
ACHIESTHurting the most
ACHIESTMost sore
ACHIESTMost in need of liniment
ACHIESTMost in need of a rubdown
ACHIESTMost uncomfortable
ACHIESTSuperlatively sore
ACHIESTMost painful.
ACHIESTMost painful
ACHIESTMaximally sore