insistent

Short definition from Wiktionary

Adjective

1. 1
   Standing or resting on something.
2. 2
   Urgent in dwelling upon anything; persistent in urging or maintaining.
3. 3
   Extorting attention or notice; coercively staring or prominent; vivid; intense.
4. 4
   Standing on end: specifically said of the hind toe of a bird when its base is inserted so high on the shank that only its tip touches the ground: correlated with incumbent.