From shabats; entanglement, i.e. (figuratively) perplexity -- anguish.
see HEBREW shabats
H7661. shabats
שָׁבָץ noun masculine (meaning and connection with above √ dubious); — הַשּׁ ׳אֲחָזַנִי 1 Samuel 1:9 ׳הַשּׁ hath seized me, i.e. perhaps cramp (EwG iii. 147 Th Ke, compare Dr); al. giddiness (Thes Klo HPS), as intricacy, confusion; Kit Bu Now leave undecided.