Lexical Definition

‎שַׂרְעַף‎ sarʻaph (sar-af') anxiety H:N-M
for ‎סָעִף‎

thought.

1) disquieting thoughts, thoughts

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
שַׂרְעַפָּֽי disquieting thoughts my Ps.139.23
שַׂרְעַפַּ֣י disquieting thoughts my Ps.94.19

Brown-Driver-Briggs

[‎שַׂרְעַפִּים‎] noun [masculine] plural disquieting thoughts (compare ‎סַרְעַפָּה‎ below ‎סעף‎, Ges«GKC:85w»§ 85w); — suffix ‎שַׂרְעַפַּי‎ Ps 94:19 (apparently of anxious doubts); as secrets ‎פָּ֑י‎-, Ps 139:23 (open to ‎׳‎‎י‎ ‎לְבָבִי‎).

Brown-Driver-Briggs References

Book Refs
Psalms 94:19 · 139:23