someone INJURED again and again will become TOUGH
I NU(knew) that RED iron would *harden* when it cools down and after that it would be *accustomed* to further exposures.
To become INURED you must have ENDURED.
Someone getting INjURED frequently will get HARDENED and ACCUSTOMED to pain.
in(in) u(ur) red(red).i am used to seein u in red clothes i.e m accustomed..
Whn am In YOu (inured) its hard :P
for the definition: used to accepting something undesirable: "eating rotten food isn't bad - its all "in-ur-'ed". (Cockney English).
inured = "in" + "ur(your)" + "hard" u hav become hard/tough from inside by habitual exposure
in:inside ;ure: manure or urine; able to live inside manure,adapt to hardship
in + ur + bed >>> due to regular sex he is now has HARDENED the sill of Fucking...
if u become IMMUNE to sth u r INURED
you ENDURE getting INJURED