Lexical Definition

‎δεισιδαιμονέστερος‎ deisidaimonésteros (dice-ee-dahee-mon-es'-ter-os) religious ^G:A
the compound of a derivative of the base of ‎δειλός‎ and ‎δαίμων‎

too superstitious.

• more religious than others

Abbott-Smith

* δεισι-δαίμων, -ον (< δείδω, to fear; δαίμων, deity)
reverent to the deity, religious; compar. -μονεστέρους (AV, too superstitious, R, txt., somewhat superstitious, a sense in wh. the word is sometimes used; cf. Field, Notes, 125), more religious, God fearing, than others, quite religious (Abbott, Essays, 105 ff.; Deiss., LAE, 285): Ac 17:22.†
SYN.: εὐσεβής (q.v.), θεοσεβής, θρῆσκος (Cremer, 681; DB, ext., 142 a).

Abbott-Smith References

Liddell-Scott-Jones

δεισιδαίμων-ων, ον,

genitive ονος, (δείδω) fearing the gods,

__1 in good sense, pious, religious, [Refs 5th c.BC+]: comparative -έστερος[NT]
__2 in bad sense, superstitious, [Refs 4th c.BC+]; δ. διάθεσις, ={δεισιδαιμονία}, [Refs 1st c.BC+]: comparative -έστερος[Refs 3rd c.AD+]: superlative -έστατος[Refs 2nd c.AD+] adverb -όνως[Refs 1st c.AD+]

_{LSJ Scripture Refs: Acts.17.22}