Quick Definition
fasting, without food
Strong's Definition
not eating, i.e. abstinent from food (religiously)
Derivation: from the inseparable negative particle (not) and G2068 (ἐσθίω);
KJV Usage: fasting
Thayer's Greek Lexicon
νῆστις, accusative plural νήστεις and (so Tdf. (cf. Proleg., p. 1183) νῆστις (see Lob. ad Phryn., p. 326; Fritzsche, Commentary on Mark, p. 796f; cf. (WHs Appendix, p. 157b); Buttmann, 26 (23)), ὁ, ἡ (from νή and ἐσθίω, see νήπιος), fasting, not having eaten: Mat_15:32; Mar_8:3. (Homer, Aeschylus, Hippocrates (), Aristophanes, others.)
Mounce Concise Greek Dictionary
νῆστις nēstis 2x
can also be masc. with a gen. in ιδος (n-3c[2]), fasting, hungry, Mat_15:32 ; Mar_8:3
Abbott-Smith Greek Lexicon
νῆστις , -ιος , ὁ , ἡ
( < νη -, neg . prefix, + ἐσθίω ),
in cl ., chiefly poλt.,
[in LXX : Da LXX Dan_6:18 (19) ( H2908 ) * ;]
not eating, fasting: Mat_15:32 , Mar_8:3 .†
Moulton & Milligan — Vocabulary of the Greek NT
νῆστις [page 426]
For the rare form νήστης see the medical receipt P Oxy VIII. 1088 .44 (early i/A.D.) ταῦτα νήστηι δίδου πεῖν , give them to the patient to drink fasting (Ed.) : cf. Syll 805 (= .3 1171) .9 (Rom.) ἔδωκεν εὔζωμον νήστῃ τρώγειν , he gave rocket to the fasting man to eat. MGr νηστικός , sober, hungry.
Liddell-Scott — Intermediate Greek Lexicon
νῆστις νῆστις, ιος, ὁ, [Etym: νη-, ἐσθίω] "not eating, fasting", of persons, Hom. ; c. gen., νῆστις βορᾶς Eur. :—metaph., νῆστιν ἀνὰ ψάμμον over the "hungry" sand, Aesch. νῆστις νόσος, λιμός "hungry" famine, id=Aesch. ; νήστισιν αἰκίαις the pains "of hunger", id=Aesch. ; νήστιδες δύαι id=Aesch. act. "causing hunger, starving", πνοιαὶ νήστιδες id=Aesch.
STEPBible — Tyndale Abridged Greek Lexicon
νῆστις, -ιος, ὁ, ἡ
(νη-, neg. prefix, + ἐσθίω),
in cl., chiefly poët.,
[in LXX: Dan LXX 6:18 (19) (טְוָת)* ;]
not eating, fasting: Mat.15:32, Mrk.8:3.†
(AS)