FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

tsmiythuth tsem-ee-thooth' — or tsmithuth {tsem-ee-thooth'}; from 6789; excision, i.e. destruction; used only (adverbially) with prepositional prefix to extinction, i.e. perpetually:--ever.

see HEBREW for 06789