Я69
НА ЯТЬ
old-fash,
collPrepPInvar 1. ( subj-compl with copula ( subj: any common noun) or nonagreeing postmodif ) very good, excellent in quality, form etc
with a capital A ( В etc )
one in a million
a NP in the finest sense of the word.
2. сделать что \Я-69
adv (to do sth. ) excellently
to a T
to perfectionperfectlysplendidly
знать что \Я-69 know sth. inside out
know
sth. backward and forward.