Lexical Definition

‎פִּלְאִי‎ pilʼîy (pil-ee') incomprehensible H:A
or פָּלִיא pâlîyʼ (paw-lee'); from ‎פָּלָא‎

secret, wonderful.

1) wonderful, incomprehensible, extraordinary

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
פֶ֛לִאי incomprehensible Judg.13.18
פְּלִ֣יאָֽה wonderful Ps.139.6

Brown-Driver-Briggs

[‎פָּלִיא‎] see following.

[‎פִּלְאִי‎] adjective wonderful, incomprehensible; —

masculine ‎פלאי‎ (i.e. ‎פִּלְאִי‎) Kt, Judg 13:18 (name of ‎׳‎‎מַלְאַךְ י‎; > Qr ‎פֶּ֫לִי(אׅ‎); feminine ‎פלאיה דַעַת מִמֶּנִּי‎ (i.e. ‎פִּלְאִיָה‎) Ps 139:6 God's knowledge; > Qr ‎פְּלִיאָה‎.

Brown-Driver-Briggs References

Book Refs
Judges 13:18
Psalms 139:6