Obliging is a synonym for obedient. It begins with O.
obscene
obi
Offers?
(4) O-bee-dee-int.
dis
Obedient has four syllables: O-be-di-ent
One option is the word officials.
Owing
Octave
"Obediant" is not an English word. The word obedient has four syllables. The syllables are o-be-di-ent.
Origin
People can be described as being obedient, observant, odd, offensive, old-fashioned, outgoing, outstanding, overbearing or overconfident. They begin with the letter o.