ob-² +

Being obdurate.

1. Stubborn or unyielding; obstinate: "She responded with an obdurate refusal to do her work."
2. Hardened in feelings or heart; not repentant: "He was an obdurate criminal."

1. To offer a reason or argument in opposition.
2. To express or feel disapproval, dislike, or distaste; be averse to.
3. To refuse or attempt to refuse to permit some action, speech, etc.
4. Anything that is visible or tangible and is relatively stable in form.
2. A thing, person, or matter to which thought or action is directed: "It was an object of medical investigation."
3. The end toward which effort or action is directed; a goal; a purpose: "Profit is the object of any business."

1. A reason or argument offered in disagreement, opposition, refusal, or disapproval.
2. The act of objecting.
3. A ground or cause for objecting.
4. A feeling of disapproval, dislike, or disagreement.

1. Causing or tending to cause an objection, disapproval, or protest.
2. Offending good taste, manners, etiquette, propriety, etc.; offensive: objectionable behavior.

Something that one's efforts or actions are intended to attain or accomplish; purpose; goal; target: "The objective of a military attack was to rescue the prisoners"; "The objective of the fund-raising drive was to help the hurricane victims."

1. A state or condition of disgrace resulting from public abuse or defamation.
2. Evil-speaking directed against a person or thing; abuse, detraction, calumny, slander.
3. Abuse or detraction as it affects the person spoken against; the condition of being spoken against; evil fame, bad repute; reproach, disgrace.

1. Highly objectionable or offensive; odious: "Her obnoxious behavior in the English class could be tolerated no longer."
2. Annoying or objectionable due to being a showoff or attracting undue attention to oneself; such as, an obnoxious little brat.

Latin obnoxius, "exposed to harm" was the original meaning of obnoxious in English, in the sixteenth century. The current meaning dates from the seventeenth century, and came to develop its sense because of its association with noxious so that for a time it actually meant "harmful", as noxious does.

Very unpleasant or rude: "He was obnoxiously arrogant."

1. To dominate or preoccupy the thoughts, feelings, or desires of (a person); beset, trouble, or haunt persistently or abnormally: "Suspicion obsessed him."
2. To think about something unceasingly or persistently.
3. To occupy someone's thoughts constantly, compulsively, and exclusively: "The desire for vengeance obsesses her."
4. Etymology: "To besiege", from Latin obsessus, past participle of obsidere, "besiege, occupy". Literally, "sit opposite to", from ob, "against" plus sedere "to sit". Of evil spirits, "to haunt", is from 1540. Obsession was originally (1513), "the act of besieging", then "hostile action of the devil or an evil spirit" (1605). The meaning "persistent influence or idea" is first recorded in 1680.

An obstruction that stands in the way or hinders progress, and which must be removed or surmounted or circumvented before it is possible to continue.

1. To block or fill (a passage) with obstacles or an obstacle.
2. To impede, retard, or interfere with; to hinder.
3. To get in the way of so as to hide from sight.

1. To anticipate and prevent or to eliminate (difficulties, disadvantages, etc.) by effective measures.
2. To render unnecessary: to obviate the risk of serious injury.

1. Easily perceived or understood.
2. Eeasily perceived by the senses or grasped by the mind.

1. To act against or provide resistance to; to combat.
2. To stand in the way of; to hinder; to obstruct.
3. To set as an opponent or an adversary.
4. To be hostile or adverse to, as in opinion: "He opposed a resolution in the proposal."
5. To set as an obstacle or a hindrance.