The word "forrader" is a variant of "forward" and is used in British English. The spelling can be a bit confusing as it contains two r's. The IPA phonetic transcription for "forrader" is /ˈfɔːrədər/, which shows the pronunciation of the word with the stress on the first syllable. The extra "r" in the spelling represents the coalescence of the "w" sound and the following "r" sound, which is a common feature of certain British dialects. Despite its uncommon spelling, "forrader" is still a recognized and useful word.
The word "forrader" is derived from the Middle English "foreward", which is a combination of the words "fore" (meaning "in front") and "ward" (meaning "direction"). Over time, "foreward" evolved into "forrard", and eventually, "forrader". It is used to indicate movement or progress in a forward direction.