1. 确定的：corroborator 确证者 | corroboratory 确定的 | corroboree 歌舞会

2. 确证的：corroborator /确证者/ | corroboratory /确证的/ | corroboree /土人的夜间祭祀/

3. 确定的, 证实的：corroborator || 确证者 | corroboratory || 确定的, 证实的 | corrode || 使腐蚀, 侵蚀

4. 确定的; 证实的 (形)：corroborator 确证者 (名) | corroboratory 确定的; 证实的 (形) | corrode 使腐蚀, 破坏, 侵蚀; 腐蚀, 被侵蚀 (动)

adj

1. serving to support or corroborate

e.g. collateral evidence

Synonym: collateralconfirmativeconfirmingconfirmatorycorroborativesubstantiatingsubstantiativevalidatingvalidatoryverificatoryverifying