English to English Dictionary

Oppositionism

The practice or philosophy of opposing or resisting a particular authority or ideology.

Oppression

The state of being subject to unjust treatment or control.

Oppressive Regime

A government or political system that exercises harsh and authoritarian control over its citizens.

Oppressor

A person or entity that oppresses others, often through unjust or cruel use of power.

Opt

To make a choice or decision from a range of options.

Opt-Out

To choose not to participate in something, especially in a program or service.

Optical

Relating to sight or the science of optics.

Optical Telescope

An instrument that gathers and focuses light, primarily in the visible light part of the spectrum, to create a magnified image of distant objects.

Optician

A person qualified to make and supply eyeglasses and contact lenses for correction of vision.

Optimal

Most favorable or desirable under given circumstances.

Optimality

The state or condition of being optimal; the best or most effective condition.

Optimism

Hopefulness and confidence about the future or the successful outcome of something.