unacquaintedly
unacquainted
inconversant
unconversant
unknownly
strangerlike
unregardedly
blind
unacquaintable
have the advantage of someone
unbeknownst
unbeknown
unknowing
semiacquaintance
unsocialized
scrape acquaintance
ungreeted
incognito
unnotedly
long-lost
nonfamiliarity
unconfided
attentionless
nonconversant
facelessly
nonbriefed
unbriefed
presenceless
talkless
stranger
namelessly
orient
unintrospective
undistinguishingly
unperceivedly
unfondly
nonintrospective
behind someone's back
in
unsolicitedly
strange
no-name
undescried
unused
friendless
pastless
conversationless
nameless
undisclosedly
uninquisitive