Psa. 78:11 KJV (With Strong’s)

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11
And forgat
shakach (Hebrew #7911)
a primitive root; to mislay, i.e. to be oblivious of, from want of memory or attention
KJV usage: X at all, (cause to) forget.
Pronounce: shaw-kakh'
Origin: or shakeach {shaw-kay'-akh}
r his works
`aliylah (Hebrew #5949)
from 5953 in the sense of effecting; an exploit (of God), or a performance (of man, often in a bad sense); by implication, an opportunity
KJV usage: act(-ion), deed, doing, invention, occasion, work.
Pronounce: al-ee-law'
Origin: or malilah {al-ee-law'}
, and his wonders
pala' (Hebrew #6381)
properly, perhaps to separate, i.e. distinguish (literally or figuratively); by implication, to be (causatively, make) great, difficult, wonderful
KJV usage: accomplish, (arise...too, be too) hard, hidden, things too high, (be, do, do a, shew) marvelous(-ly, -els, things, work), miracles, perform, separate, make singular, (be, great, make) wonderful(-ers, -ly, things, works), wondrous (things, works, -ly).
Pronounce: paw-law'
Origin: a primitive root
that he had showed
ra'ah (Hebrew #7200)
to see, literally or figuratively (in numerous applications, direct and implied, transitive, intransitive and causative)
KJV usage: advise self, appear, approve, behold, X certainly, consider, discern, (make to) enjoy, have experience, gaze, take heed, X indeed, X joyfully, lo, look (on, one another, one on another, one upon another, out, up, upon), mark, meet, X be near, perceive, present, provide, regard, (have) respect, (fore-, cause to, let) see(-r, -m, one another), shew (self), X sight of others, (e-)spy, stare, X surely, X think, view, visions.
Pronounce: raw-aw'
Origin: a primitive root
them.

Cross References

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J. N. Darby Translation

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11
And forgot his doings, and his marvellous works which he had shewn them.