challenging

Meanings

1. 1
   adj

   stimulating interest or thought

   a challenging hypothesis

2. 2
   noun

   The act of making a challenge.

   There are always sincere challengings of the findings, always the objections (sincere in another sense) of those whose interests seem threatened.

3. 3
   adj

   requiring full use of your abilities or resources

4. 4
   adj

   disturbingly provocative

5. 5
   verb

   present participle and gerund of challenge

6. 6
   adj

   Difficult, hard to do.

Etymology

From Middle English chalengynge; equivalent to challenge + -ing.