unacknowledged
/AmE ˌənəkˈnɑlɪdʒd 
, BrE ʌnəkˈnɒlɪdʒd /
adjective
1 (unanswered):
my letter went unacknowledged no acusaron recibo de mi carta
2 (unrecognized) ‹authority/champion/heir› no reconocido
unacknowledged
English → Spanish
Oxford English–Spanish