Here are some words translated from an artificial language. migenlasan means…

Concept: In an artificial-language decoding puzzle, each translated word is built by concatenating separate roots, one root per concept, in the same left-to-right order as the concepts appear in the English compound word. Comparing two translations that share an English concept isolates the shared root for that concept, and once a root's meaning is fixed it can be used to confirm or rule out other options.

Application - fixing the five roots from the given translations:

1. migenlasan means cupboard: since "cupboard" = "cup" + "board" and root order matches word order, migen = cup and lasan = board.

2. lasanpoen means boardwalk: "boardwalk" = "board" + "walk"; lasan again matches "board" (confirming the previous step), so poen = walk.

3. cuopdansa means pullman: "pullman" = "pull" + "man"; so cuop = pull and dansa = man.

4. Five roots are now fixed: migen = cup, lasan = board, poen = walk, cuop = pull, dansa = man. The target word "walkway" = "walk" + "way"; poen is the known root for "walk", but no root for "way" has been fixed yet, so the correct option must pair poen with a root that has not already been assigned a conflicting meaning.

Cross-check - testing each option against the five fixed roots:

• poenmigen pairs poen (walk) with migen, but migen is already fixed as "cup" from migenlasan - a direct contradiction, so this cannot mean walkway.

• cuopeisel contains no root fixed as "walk": cuop is already fixed as "pull" (from cuopdansa), so this option carries no walk-root at all.

• lasandansa is built from lasan (board) and dansa (man) - both already fixed to other meanings, with no walk-root present.

• poenforc pairs poen (walk) with forc, a root that has not been assigned any conflicting meaning anywhere in the given data - the only combination consistent with all five fixed roots.

Result: poenforc is the only self-consistent match for "walkway".