| PDQ(directly, immediately, rapidly, instantly, shortly) |
| anon(directly, immediately, rapidly, instantly, shortly) |
| at once(expression, directly, immediately, rapidly, instantly) |
| at short notice(expression, idiom, directly, rapidly, instantly) |
| away(directly, immediately, rapidly, instantly) |
| directly(immediately, rapidly, instantly) |
| double-time(directly, immediately, rapidly, instantly, shortly) |
| forthwith(directly, immediately, rapidly, instantly, shortly) |
| hereupon(directly, immediately, rapidly, instantly, shortly) |
| in a flash(expression, idiom, directly, rapidly, instantly) |
| in a jiffy(expression, idiom, directly, immediately, rapidly) |
| in nothing flat(expression, idiom, directly, rapidly, instantly) |
| instantaneously(directly, immediately, rapidly, instantly) |
| instanter(directly, immediately, rapidly, instantly, shortly) |
| instantly(directly, immediately, rapidly) |
| like now(expression, directly, immediately, rapidly, instantly) |
| now(directly, immediately, rapidly, instantly) |
| now or never(expression, idiom, directly, rapidly, instantly) |
| on the dot(expression, idiom, directly, rapidly, instantly) |
| on the double(expression, idiom, directly, rapidly, instantly) |