| awhile | (adverb) for a brief period | Synonyms: for a while |
|---|
| erstwhile | (adjective) belonging to some prior time | Synonyms: former, old, one-time, onetime, quondam, sometime |
|---|
| (adverb) at a previous time | Synonyms: at one time, erst, formerly, once |
| meanwhile | (noun) the time between one event, process, or period and another | Synonyms: interim, lag, meantime |
|---|
| (adverb) during the intervening time | Synonyms: in the meantime, meantime |
| (adverb) at the same time but in another place | - |
| while | (noun) a period of indeterminate length (usually short) marked by some action or condition | Synonyms: patch, piece, spell |
|---|
| worthwhile | (adjective) sufficiently valuable to justify the investment of time or interest | - |
|---|
| worthwhileness | (noun) value sufficient to repay time or effort spent | - |
|---|