slash 1 antonyms and opposites of slash. Noun — A quick, forceful cutting stroke, or the cut it leaves. Synonyms for slash slash mark solidus stroke forward slash forward stroke foreslash frontslash front slash virgule shilling mark slants slant lines separatrix scratch comma oblique oblique mark oblique stroke oblique dash diagonal diagonal mark virgula virgil whack bar lash scourge thrash crack Antonyms for slash backslash ← Back to the full definition of slash