sometime

adv

1. (not-comparable)At an indefinite but stated time in the past or future.

   “I'll see you at the pub sometime this evening.”

   “This will certainly happen sometime in the future.”

   “It happened sometime yesterday.”

   “But while there remains a considerable degree of consensus that the consequence of apparently losing the plot sometime between 1914 and 1918 was the cultural and economic malaise of the 1920s and 1930s, there are still some who look back on the interwar years less with criticism than with nostalgia.”

2. (not-comparable, obsolete)Sometimes.
3. (not-comparable, obsolete)At an unstated past or future time; once; formerly.

   “Did they not sometime cry "All hail" to me?”

adj

1. (not-comparable)Former, erstwhile; at some previous time.

   “my sometime friend and mentor”

   “Therefore our sometime sister, now our queen / Th' imperial jointress to this warlike state”

   “Ion our sometime darling, whom we prized / As a stray gift, by bounteous Heaven dismiss'd”

2. (not-comparable)Occasional; intermittent.

   “an author and sometime lecturer”