having a natural inclination or tendency to something; disposed; liable

to be prone to anger.

having the front or ventral part downward; lying face downward.

lying flat; prostrate.

having a downward direction or slope.

having the palm downward, as the hand.

adjective

sitting , straight , upright , improbably , unlikely

adjective

decumbent , face down , flat , horizontal , level , procumbent , prostrate , reclining , recumbent , resupine , supinenotes:apt is for general probabilities , likely is for specific probabilities; liable and prone indicate a probability arising as a regrettable consequenceprone is lying on your face (facing downwards) - which is also true for prostrate , but only in expressing adoration or begging for protection; supine is lying on your backsupine is lying face upward , prone and prostrate are lying face downward - and prostrate suggests throwing oneself down , while recumbent is lying flat in any position , apt , bent , devoted , disposed , exposed , fain , given , inclined , minded , open , predisposed , ready , sensitive , subject , susceptible , tending , willingnotes:apt is for general probabilities , liable , likely , susceptive , vulnerable , passive , pronated , prostate , supine , willing