trudny do zdefiniowania in inglese:

Unable to understand something? It's eluding you! Elusive describes being difficult to grasp or retain. Things that are elusive hard to find, pin down, or remember. They slip right out of your grasp.

Conservationists were trying to track the elusive Siberian tiger, but it was very hard to find.

Happiness is an elusive quality.

They are elusive beasts, one rarely sees them. Well, if it isn't the elusive Agent O'Malley. The questions poured forth, the answers elusive. But they say he is as elusive as a ghost.

I have sometimes that elusive feeling of being watched.

Time of death is more elusive than most people think.

Many first time skydivers say that describing the act of falling from the sky is elusive.

an elusive concept, nature, goal

elusive Siberian tiger

he answers to these questions remain as elusive as ever.

"My favorite thing is the elusive love, with them finally getting together in the end."

This species of deer is so elusive that only two have ever been photographed in the wild.