Lexicon :: Strong's G2117 - euthys

εὐθύς, -εῖα, -ύ, Sept. for יָשָׁר, [from Pindar down], straight;
a. properly, straight, level: of a way, [Matthew 3:3]; Mark 1:3; Luke 3:4; Acts 9:11; εἰς εὐθεῖαν (L T Tr WH εἰς εὐθείας), namely, ὁδόν (an ellipsis common also in classical Greek cf. Winer's Grammar § 64, 5), Luke 3:5; εὐθεῖα ὁδός the straight, the right way, is figuratively used of true religion as a rule of life leading to its goal, i. e. to salvation, 2 Peter 2:15; αἱ ὁδοί κυρίου, the right and saving purposes of God, Acts 13:10 (Song of the Three Children, verse 3).
b. tropically, straightforward, upright, true, sincere, (as often in secular authors): καρδία, Acts 8:21 (εὐθεῖς τῇ καρδίᾳ often in the Psalms, as Psalm 7:11; Psalm 31:11 (Ps. 32:11); Psalms 35:11 (Ps. 36:11)).

BLB Scripture Index of Thayer's