IRONBOUNDOnrecordSet once, to “Unyielding” — The New York Times, Thursday, 5 May 1994.9 lettersOther answers to these cluesADAMANT7 lettersDEAF4 lettersGRANITE7 lettersHARDLINE8 lettersIRON4 lettersOBDURATE8 lettersRIGID5 lettersSTEELY6 lettersSTERILE7 lettersSTERN5 lettersSTRICT6 lettersSTUBBORN8 letters