Obdiplostemony (n.)
definition: The condition of being obdiplostemonous.

Obdiplostemony is a 14 letter word that begins with an O and ends in a Y

Obligatoriness (n.)
definition: The quality or state of being obligatory.

Obligatoriness is a 14 letter word that begins with an O and ends in an S

Oblique-angled (a.)
definition: Having oblique angles; as
An oblique-angled triangle.
Oblique-angled is a 14 letter word that begins with an O and ends in a D

Obsequiousness (n.)
definition: The quality or state of being obsequious.

Obsequiousness is a 14 letter word that begins with an O and ends in an S

Obstetrication (n.)
definition: The act of assisting as a midwife; delivery.

Obstetrication is a 14 letter word that begins with an O and ends in an N

Obstructionism (n.)
definition: The act or the policy of obstructing progress.

Obstructionism is a 14 letter word that begins with an O and ends in an M

Obstructionist (a.)
definition: Of or pertaining to obstructionists.

Obstructionist is a 14 letter word that begins with an O and ends in a T

Obstructionist (n.)
definition: One who hinders progress; one who obstructs business
As in a legislative body.
Obstructionist is a 14 letter word that begins with an O and ends in a T

Obstupefaction (n.)
definition: See Stupefaction.

Obstupefaction is a 14 letter word that begins with an O and ends in an N

Obstupefactive (a.)
definition: Stupefactive.

Obstupefactive is a 14 letter word that begins with an O and ends in an E

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