Quick Definition
most exact, strict
Strong's Definition
most exact
Derivation: superlative of (a derivative of the same as G206 (ἄκρον));
KJV Usage: most straitest
Thayer's Greek Lexicon
ἀκριβής, (ές, genitive (οῦς, exact, careful. The neuter comparitive is used adverbially in Act_18:26; Act_23:15; Act_23:20; Act_24:22; ἡ ἀκριβεστάτη αἵρεσις the straitest sect i. e. the most precise and rigorous in interpreting the Mosaic law, and in observing even the more minute precepts of the law and of tradition, Act_26:5. (From Herodotus down.)
Mounce Concise Greek Dictionary
ἀκριβής akribēs 1x
exact, strict, Act_26:5
Abbott-Smith Greek Lexicon
ἀκριβής , -ές ,
[in LXX : Da LXX Dan_2:45 ; Dan_6:12 ( H3330 ) Dan_4:25 , Ezr_4:5 , Sir_18:29; Sir_19:25; Sir_31:24; Sir_32:3 * ;]
exact, precise, careful , of things and persons: superl ., Act_26:5 .†
STEPBible — Tyndale Abridged Greek Lexicon
ἀκριβής, -ές
[in LXX: Dan LXX 2:45 6:12 (יַצִּיב) Dan.4:25, Est.4:5, Sir.18:29 19:25 31:24 32:3 * ;]
exact, precise, careful, of things and persons: superl., Act.26:5.†
(AS)