"to give a sign, indicate" (sema, "a sign:" cp. SIGN, No. 1), "to signify," is so translated in Joh 12:33, Joh 18:32, Joh 21:19, Act 11:28, Act 25:27, Rev 1:1, where perhaps the suggestion is that of expressing by signs.
<2,,1213, deloo>
"to make plain" (delos, "evident"), is translated "to signify" in 1Co 1:11, RV, "it hath been signified" (AV, "declared"); Heb 9:8, Heb 12:27, 1Pe 1:11, AV (RV, "Point unto"); 2Pe 1:14, RV, "sifnified" (AV, "hath showed"). See POINT (unto).
<3,,1718, emphanizo>
"to manifest, make known," is translated "signify" in Act 23:15, Act 23:22, RV (AV, "hath showed"). See APPEAR, No. 5.
Note: In Act 21:26, AV, diangello, "to announce," is rendered "to signify" (RV, "declaring").