Matthew 12:2ἔξεστιν
When the Pharisees saw this, they said to Him, “Look, Your disciples are doing what is unlawful on the Sabbath.”
Mark 2:26ἔξεστιν
During the high priesthood of Abiathar, he entered the house of God and ate the consecrated bread, which was lawful only for the priests. And he gave some to his companions as well.”
Luke 6:2ἔξεστιν
But some of the Pharisees asked, “Why are you doing what is unlawful on the Sabbath?”
John 5:10ἔξεστίν
so the Jews said to the man who had been healed, “This is the Sabbath! It is unlawful for you to carry your mat.”
Acts 16:21ἔξεστιν
by promoting customs that are unlawful for us Romans to adopt or practice.”
1 Corinthians 6:12ἔξεστιν
“Everything is permissible for me,” but not everything is beneficial. “Everything is permissible for me,” but I will not be mastered by anything.

Abbott-Smith

ἔξ-εστι
(εἰμί),
impers. verb.,
it is permitted, lawful: Mrk.2:24, Act.8:37 (R, mg.), 1Co.10:23; with inf., Mat.12:2, 10 12 14:4 15:26 19:3 22:17 27:6, Mrk.3:4 12:14, Luk.6:2, 9 14:3, Jhn.5:10; before accusative, Mrk.2:26, Luk.6:4 20:22; with dative of person(s) and inf., Mat.20:15, Mrk.6:18 10:2, Jhn.18:31, Act.16:21 21:37 22:25 (inf. understood), 1Co.6:12; ἐξόν (sc. ἐστί), Act.2:29, 2Co.12:4; ἐξὸν ἦν, Mat.12:4.†
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.