I don't know about you/him/her/them

:  the 9th letter of the English alphabet

:  a graphic representation of this letter

:  a speech counterpart of orthographic i

: industrial

: initial

: intelligence

: imaginary unit

:  do not

:  does not

:  a command or entreaty not to do something

:  to perceive directly :  have direct cognition of

:  to have understanding of

:  to recognize the nature of :  discern

:  knowledge

:  the one or ones being addressed — compare thee, thou, ye, your, yours

:  one

: objective case ofhe

:  of or relating to her or herself especially as possessor, agent, or object of an action — compare ¹she

: objective case ofshe

: heraldry

: objective case ofthey

:  they

:  those

:  those