"to make haste, to be zealous," and hence, "to be diligent," is rendered "endeavoring" in Ephesians 4:3 , AV; RV, "giving diligence." In 2 Peter 1:15 , AV, "endeavor," RV, "give diligence." Both have "endeavored" in 1 Thessalonians 2:17 . See DILIGENCE.
"to seek after," is translated "endeavor" in Acts 16:10 , AV, RV, "sought." See ABOUT (to be), DESIRE , INQUIRE , SEEK.