iron adj
1 chalybeate, ferric, ferrous, irony
2 (figurative) adamant, cruel, hard, heavy, immovable, implacable, indomitable, inflexible, obdurate, rigid, robust, steel, steely, strong, tough, unbending, unyielding
2 bending, easy, flexible, light, malleable, pliable, soft, weak, yielding
iron out
clear up, eliminate, eradicate, erase, expedite, get rid of, harmonize, put right, reconcile, resolve, settle, simplify, smooth over, sort out, straighten out, unravel