leading tone

noun 0.699

motive

noun 0.648

leitmotif

noun 0.622

leading line

noun 0.609

prime mover

noun 0.587

leading

noun 0.583

motive power

noun 0.578

leading case

noun 0.568

motif

noun 0.566

ulterior motive

noun 0.538

motivo

noun 0.538

protagonist

noun 0.536

main drag

noun 0.535

lead dog

noun 0.534

leading rein

noun 0.532

first cause

noun 0.524

master spirit

noun 0.521

mainprise

noun 0.520

lead single

noun 0.520

predominant

noun 0.515

mainspring

noun 0.510

prime suspect

noun 0.510

primary

noun 0.509

main clause

noun 0.509

keynote

noun 0.506

mainstay

noun 0.505

lead off

noun 0.504