Shifty, Secretive, Sneaky
This page is the CodyCross answer for the clue below from Train Travel, Group 703, Puzzle 2 (Steam Propulsion).
Question is: Shifty, Secretive, Sneaky
and the answer is: FURTIVE
Word Meaning:
FURTIVE — Of a thing: done with evasive or guilty secrecy.
Definitions from Wiktionary.