(computing, Internet) a system operator, especially someone who administers an online communications system or bulletin board

operator, one who operates machinery / operator, one who directs telephone calls / surgeon, a doctor who performs surgery / captain, a person who controls a ship

excellence

excellent, superior, outstanding

to know, be aware of / to learn, acquire, / to be acquainted with, to know (someone) / (colloquial, in the negative) to care in the least about, to be concerned with,

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

system

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

stem or continuative form of 知る (shiru) [godan]