| Word | Definitions | Synonyms |
|---|---|---|
| langsyne | (adverb) of the distant or comparatively distant past | Synonyms: lang syne, long ago, long since |
| synchronously | (adverb) in synchrony; in a synchronous manner | - |
| synergistically | (adverb) (of drugs or muscles) in a synergistic or interactive manner | - |
| (adverb) (of group) in a synergistic or cooperative manner | - | |
| synonymously | (adverb) in a synonymous manner | - |
| syntactically | (adverb) with respect to syntax | - |
| synthetically | (adverb) by synthesis; in a synthetic manner | - |