English Words Starting With O

• overhaul

  nounverbverb-transitiveC1
  /ˌəʊvəˈhɔːl/To completely examine and repair or improve something, especially a system or machine.
• overhead

  adjectiveadverbnounB2
  /ˌəʊvəˈhɛd/Located or operating above the level of the head; in the sky or upper space.
• overhead camshaft

  nounC1-C2
  /ˌəʊvəˌhɛd ˈkæmʃɑːft/A mechanism in an internal combustion engine where the camshaft is located in the cylinder head above the valves, rather than in the engine block.
• overhead door

  nounIntermediate
  /ˌəʊvəˈhed dɔː(r)/A large door, typically for a garage, warehouse, or commercial building, that is composed of horizontal panels hinged together and opens vertically by rolling up overhead.
• overhead projector

  nounC1
  /ˌəʊ.və.hed prəˈdʒek.tər/A device that projects an enlarged image of a transparent sheet placed on its lit surface onto a screen or wall.
• overhead railway

  nounC1
  /ˌəʊvəhed ˈreɪlweɪ/A railway system where the tracks are elevated above street level, typically on a raised structure or pillars.
• overhead-valve engine

  nounlow
  /ˌəʊ.və.hed ˈvælv ˌen.dʒɪn/An internal combustion engine with the valves located in the cylinder head, above the combustion chamber.
• overheads

  plural-nounB2
  /ˈəʊvəhedz/The regular, ongoing expenses of operating a business, such as rent, utilities, and administrative salaries, which are not directly tied to producing specific goods or services.
• overhear

  verbverb-transitiveB2
  /ˌəʊvəˈhɪə/To hear something accidentally or without the speaker's knowledge, typically a conversation you are not intended to hear.
• overheat

  nounverbverb-intransitiveverb-transitiveB2
  /ˌəʊ.vəˈhiːt/To become or cause something to become too hot, or to become too excited/agitated.
• overhit

  verb-intransitiveLow Frequency
  /ˌəʊvəˈhɪt/to hit a ball or shot with too much force or power, causing it to go beyond its intended target.
• overhung

  adjectiveverbC1/C2 - Low frequency, literary/descriptive
  /ˌəʊvəˈhʌŋ/To project or extend over something; to be suspended or loom above.
• overijssel

  nounC2
  /ˌəʊvərˈaɪsəl/A province in the eastern Netherlands.
• overindulge

  verbverb-ambitransitiveMedium (B2-C1 level vocabulary)
  /ˌəʊvərɪnˈdʌldʒ/To allow oneself or someone else to have too much of something enjoyable, especially food, drink, or pleasure, to the point of excess.
• overissue

  nounverbC1/C2
  /ˌəʊvərˈɪʃuː/The act of issuing (especially shares or currency) in excess of the authorised or proper amount.
• overjoy

  verbverb-transitiveC1
  /ˌəʊvəˈdʒɔɪ/To cause someone to feel an extremely intense degree of happiness and delight.
• overkill

  nounC1
  /ˈəʊvəkɪl/An amount or degree of something that is far greater than what is necessary or appropriate for achieving a desired effect; excessive or redundant force or action.
• overlade

  verb-transitiveC1
  /ˌəʊvəˈleɪd/To load something excessively or beyond its capacity.
• overlaid

  verbC1
  /ˌəʊvəˈleɪd/the past tense and past participle of 'overlay', meaning to cover the surface of something, often with a decorative or protective layer.
• overland

  adjectiveadverbverbB2
  /ˈəʊvəland/Travelling or taking place across land, as opposed to by sea or air.

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