SUREFOOTED
confident, surefooted, sure-footed
(adjective) not liable to error in judgment or action; “most surefooted of the statesmen who dealt with the depression”- Walter Lippman; “demonstrates a surefooted storytelling talent”- Michiko Kakutani
surefooted, sure-footed, footsure
(adjective) not liable to stumble or fall; “on surefooted donkeys”
Source: WordNet® 3.1
Etymology
Adjective
surefooted (comparative more surefooted, superlative most surefooted)
Walking steadily, without stumbling; capable of finding good footing.
Confident and capable.
Source: Wiktionary
Sure"-foot`ed, a.
Definition: Not liable to stumble or fall; as, a sure-footed horse.
Source: Webster’s Unabridged Dictionary 1913 Edition