Boastful
believed, believes, believer, relieved, relieves, reliever, helmeted
diddled gagging
possess
Some five letter words that have a third letter O and fifth letter E are:abodeaboveadobeadorealonearoseatoneawokebiomeblokeboozebrokechokechorechoseclonecloseclovecronediodedronedroveelopeemoteerodeevokefrozegeodeglobeglovegnomegoosegropegrovekroneloosemoosenooseozonephoneprobeproneproseprovequotesconescopescoreshoneshoreshoveslopesmokesnorespokesporestokestolestonestorestovesworetholethosetrovewholewhosewrote
Some eight letter words with the third letter B are:albacoreambianceambitionambrosiaarborealasbestosbabushkabiblicalbobolinkCabernetdebonairdebutantembezzleemblazonembolismembossedfabuloushabitualhibiscushobbyistimbecilejubilantlibationlobbyistlobotomymobilitynebulousnobilitypubliclyrebelledrebuttalsabotagesaboteursobrietysubmergesubpoenasubtotalsubtractsuburbantabletoptoboggantuberousumbrellaunbrokenunbuckleunbuttonurbanizevibrator
believed, believes, believer, relieved, relieves, reliever, helmeted
crucible, neurally
Chasten
romantic
That's probably "mustard." The "p" is likely incorrect.
In a major scale, these 3rd, 5th, and 7th steps are equal to a major third, a perfect fifth, and a major seventh, respectively. If you were to lower these (by half a step, or one semitone), you would get a minor third, a diminished fifth, and a minor seventh, respectively.
diddled gagging
The third, Prisoner of Azkaban. And the fifth. And the seventh.
one third plus one fifth is eight fifteenth
reaction
sixth
possess