Definition

1. Verb (Transitive):

   • To make something completely full. This involves adding enough of a substance (liquid, gas, solid) to occupy all or the intended available space within a container or area.
   • To occupy or block a space, gap, or hole completely, stopping it up.

2. Verb (Intransitive):

   • To become completely full.
   • To eat food until one is no longer hungry; to satisfy one's appetite.

Examples of Usage

• Verb (Transitive):

  • Please fill up the car's gas tank before our trip.
  • The volunteers helped fill up the sandbags.
  • We need to fill up this hole in the wall.

• Verb (Intransitive):

  • The stadium began to fill up an hour before the game.
  • "Don't eat cake now, or you'll fill up before dinner," her mother said.

Advanced Usage

• "to fill up on something": To eat a lot of a particular food, often to the point of being satisfied or too full.
  • He filled up on bread and had no room for the main course.
• "to fill someone up" (metaphorical): To cause someone to feel a strong emotion, often pride, joy, or sadness.
  • Seeing her graduate filled me up with pride.

Variants and Related Words

• Fill (verb): The base form, meaning to make or become full. "Fill up" often implies a more complete or final action.
• Filler (noun): A substance used to fill a gap or cavity.
• Filling (noun/adjective): 1. The substance inside something (e.g., pie filling). 2. Describing food that makes you feel full (e.g., a filling meal).

Synonyms

• Pack: To fill a space tightly.
• Load: To put a large quantity of something into/onto a vehicle or container.
• Plug (verb): To stop up a hole.
• Satiate: To satisfy fully (for hunger).

Related Phrasal Verbs

• Fill in: 1. To add information to complete a form or blank space. 2. To substitute for someone temporarily.
  • Please fill in your name on the application.
  • Can you fill in for me at the meeting tomorrow?
• Fill out: 1. To become larger or rounder. 2. To complete a form (similar to "fill in").
  • His face has filled out since he was a teenager.
  • You must fill out this paperwork.

Related Idioms

• Fill the bill: To be exactly what is needed.
  • This new software fills the bill for our project requirements.

Verb

1. eat until one is sated
   • He filled up on turkey
2. fill or stop up
   • Can you close the cracks with caulking?
3. become full
   • The pool slowly filled with water
   • The theater filled up slowly
4. make full, also in a metaphorical sense
   • fill a container
   • fill the child with pride