1
Corroborating - (Adj.)
Serving to give support to the truth (Supporting/Confirming)
2
Quavering - (Adj.)
Shaking, trembling, or sounding unsteady (Shakey/Trembly)
3
Reprimanding - (Verb)
The act of expressing severe, formal/official disapproval to someone who's done wrong (Unaprove)
4
Ameliorale - (Verb)
To make a bad situation better, more tolerable, or less severe (Improve)