Brown-Driver-Briggs (BDB)
H61
H61 אֲבָל . in older Heb. with an assertive force, verily , of a truth . in late Heb. as a decided adversative, howbeit , but
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain
Strong's H61 · Hebrew
'abal
ab-awl'
apparently from 56 through the idea of negation; nay, i.e. truly or yet