Diminishing
From BiblePortal Wikipedia
Vine's Expository Dictionary of NT Words [1]
1: Ἥττημα (Strong'S #2275 — Noun Neuter — hettema — hayt'-tay-mah )
see Defect.
King James Dictionary [2]
Diminishing ppr. Lessening contracting degrading.
Webster's Dictionary [3]
(p. pr. & vb. n.) of Diminish