Psalms 50:23: it is not in the original.

Psalms 78:8 (Hilphil)
03559 כון kuwn koon
a primitive root; v; {See TWOT on 964}
AV-prepare 85, establish 58, ready 17, stablish 5, provide 5, right 5, fixed 4, set 4, direct 3, order 3, fashion 3, variant 2, certain 2, confirmed 2, firm 2, preparation 2, misc 17; 219
1) to be firm, be stable, be established
1a) (Niphal)
1a1) to be set up, be established, be fixed
1a1a) to be firmly established
1a1b) to be established, be stable, be secure, be enduring
1a1c) to be fixed, be securely determined
1a2) to be directed aright, be fixed aright, be steadfast (moral sense)
1a3) to prepare, be ready
1a4) to be prepared, be arranged, be settled
1b) (Hiphil)
1b1) to establish, set up, accomplish, do, make firm
1b2) to fix, make ready, prepare, provide, provide for, furnish
1b3) to direct toward (moral sense)
1b4) to arrange, order
1c) (Hophal)
1c1) to be established, be fastened
1c2) to be prepared, be ready
1d) (Polel)
1d1) to set up, establish
1d2) to constitute, make
1d3) to fix
1d4) to direct
1e) (Pulal) to be established, be prepared
1f) (Hithpolel) to be established, be restored

Proverbs 15:2 (Hilphil)
03190 יטב yatab yaw-tab'
a primitive root; v; {See TWOT on 863}
AV-well 35, good 21, please 14, merry 5, amend 4, better 4, accepted 2, diligently 2, misc 20; 107
1) to be good, be pleasing, be well, be glad
1a) (Qal)
1a1) to be glad, be joyful
1a2) to be well placed
1a3) to be well for, be well with, go well with
1a4) to be pleasing, be pleasing to
1b) (Hiphil)
1b1) to make glad, rejoice
1b2) to do good to, deal well with
1b3) to do well, do thoroughly
1b4) to make a thing good or right or beautiful
1b5) to do well, do right

Proverbs 23:31
04339 מישׁר meyshar may-shawr'
from 03474; n m; {See TWOT on 930 @@ "930e"}
AV-equity 4, uprightly 3, uprightness 3, right things 2, agreement 1, aright 1, equal 1, right 1, righteously 1, sweetly 1, upright 1; 19
1) evenness, uprightness, straightness, equity
1a) evenness, level, smoothness
1b) uprightness, equity
1c) rightly (as adv)

Jeremiah 8:6 (Piel)
01696 דבר dabar daw-bar'
a primitive root; v; {See TWOT on 399}
AV-speak 840, say 118, talk 46, promise 31, tell 25, commune 20, pronounce 14, utter 7, command 4 misc 38; 1143
1) to speak, declare, converse, command, promise, warn, threaten, sing
1a) (Qal) to speak
1b) (Niphal) to speak with one another, talk
1c) (Piel)
1c1) to speak
1c2) to promise
1d) (Pual) to be spoken
1e) (Hithpael) to speak
1f) (Hiphil) to lead away, put to flight