funambulatory

from The Century Dictionary.

• Performing like a ropewalker.
• Pertaining to or characteristic of rope-walking.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Performing like a ropedancer.
• adjective Narrow, like the walk of a ropedancer.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Performing in the manner of a tightrope walker.
• adjective narrow, like a tightrope