Synonyms for Half-hour:

n.

ahead, after, around, forward, fast, about, AM, at. hour, minute, min, microsecond, millisecond, S, M, hr, nanosecond. half-hour (noun)
30 minutes.

Other synonyms:

ahead, at, forward, about, AM, millisecond, around, after, nanosecond, microsecond, fast. min. hr. S. hour. minute. M. Other relevant words:
around, hour, min, about, AM, nanosecond, fast, ahead, M, minute, hr.