Physically attached to something; that sticks fast; that sticks together.

That adheres, clings, or sticks to a person or thing (literal and figurative); sticky, adhesive.

That adheres (in various senses of the verb). Also: persistent, abiding (cf. adhesive, adj. 2).

That clasps; grasping, embracing, enclosing.

That cleaves, adheres, or clings.

Holding fast or inclined to hold fast; grasping hard; clinging tightly.

Steadfastly attached or committed (to something); (hence) tenacious, clinging; persistent, abiding.

That clings; cleaving.