She neglected to mention that she was married.
I believe you meant to write the word "neglected."
The word neglected has three syllables. (ne-glect-ed)
The garden had been neglected for months, with weeds overtaking the flowers and shrubs.
neglected or
The word neglected is a verb. It can also be an adjective to describe something or someone suffering from neglect.
Emotionally deprived or neglected
Another word for overlooked is neglected, missed.
"I was being neglectful by not feeding my cat on time"
The noble knight never neglected his duties.
Single, Evaded, Lapsed From thesarus.com
Abandoned? It has very negative connotations though, if that's not quite what you were thinking of. you could also use something like Deserted or Neglected.
Pinabayaan is a Tagalog term which means neglected or ignored. Other Tagalog terms for pinabayaan are di pansinin or walang lumingap.