TESTIFY
VERBS
► DEPONE to testify, to asseverate, to affirm; to give evidence as a witness → 1726 Sc.
► INSTEFY ► INSTIFY to show, to testify; to set forth → 1899 Amer. dial.
► QUALIFY 1. to prove; to authenticate, to make good; to testify to → 1746 Sc. & N. Eng. dial. obs.
2. to put one to an oath, to cause one to testify; to swear, to testify → 1827 Amer. dial.
► SUFFRAGATE to testify, to bear witness to → 1620 obs.
► TESTY to testify → 1890 Eng. dial.
Lexicophilia 