elusive

“Still on the track of the elusive bicyclist?” Holmes asked cheerfully.

A bridge spanned it midway and from there to its lower end, where an amber-hued belt of sand-hills shut it in from the dark blue gulf beyond, the water was a glory of many shifting hues--the most spiritual shadings of crocus and rose and ethereal green, with other elusive tintings for which no name has ever been found.

In cities like London, these adaptable mammals have firmly established themselves, transforming from elusive woodland creatures into confident urban neighbors.

Unlike their rural counterparts, which maintain vast territories to hunt elusive prey, city foxes require much smaller areas to survive.