nerveless

adj

1. Lacking nerve: fearful; cowardly.
2. Lacking a nervous system.
3. Devoid of nerves: calm, controlled, cool under pressure.

   “Little Sea and Desire, blessed, nerveless savages, were sound asleep.”

   “There was no distracting Rosol's ice-calm as he killed the fifth set and match. Ace, cross-court forehand winner, ace, forehand winner – a blistering eighth game took him to 5-3 and informed Nadal precisely how nerveless the Czech was.”