Antonyms for
fast
Firmly or securely fixed in place
1 antonym 4 letters

Found 1 Antonym for Fast

Words with the opposite meaning to fast:

slow

This word has its own antonym network. Click to explore related alternatives.

All Definitions for Fast

Below are all the dictionary definitions of fast:

1Firmly or securely fixed in place
2Stable.
3Firm against attack
4Fortified by nature or art
5Impregnable
6Strong.
7Steadfast, with unwavering feeling. (Now mostly in set phrases like fast friend(s).)
8Moving with great speed, or capable of doing so
9Swift, rapid
10Light.
11Having a kinetic energy between 1 million and 20 million electron volts
12Often used to describe the energy state of free neutrons at the moment of their release by a nuclear fission or nuclear fusion reaction (i.e., before the neutrons have been slowed down by anything).
13Of a place, characterised by business, hustle and bustle, etc.
14Causing unusual rapidity of play or action.
15Able to transfer data in a short period of time.
16Deep or sound (of sleep)
17Fast asleep (of people).
18Not running or fading when subjected to detrimental conditions such as wetness or intense light
19Permanent.
20Having an extravagant lifestyle or immoral habits.
21Uncharacteristically mature or promiscuous for one's age.
22Ahead of the correct time or schedule.
23More sensitive to light than average.
24A train that calls at only some stations it passes between its origin and destination, typically just the principal stations.
25In a firm or secure manner, securely
26In such a way as not to be moved
27Safe, sound .
28Deeply or soundly .
29Immediately following in place or time
30Close, very near .
31Quickly, with great speed
32Within a short time .
33Ahead of the correct time or schedule.
34To practice religious abstinence, especially from food.
35To reduce or limit one's nutrition intake for medical or health reasons, to diet.
36To cause (a person or animal) to abstain, especially from eating.
37The act or practice of fasting, religious abstinence from food.
38Any of the fasting periods in the liturgical year.
39Tenacious
40Retentive.
41An acronym for remembering desirable characteristics for goal-setting: frequently discussed, ambitious, specific, transparent.
42A surname.
43Acronym of focused assessment with sonography for trauma.
44Acronym of firefighter assist and search team.
45Acronym of free advertising-supported streaming television
46Initialism of Five-hundred-meter Aperture Spherical Telescope.

Writing Tips

  • Use antonyms to create contrast and emphasize differences.
  • Pair antonyms in parallel structure for rhetorical impact.
  • Not all antonyms are perfectly opposite — check context.
  • Using antonyms improves clarity by showing what something is not.
Frequently Asked Questions

What are antonyms for fast?

Words like slow are common antonyms for fast. These words express opposite or contrasting meanings and can be used to create contrast in writing.

How many antonyms does fast have?

We have identified 1 antonyms for fast in our database. The English language often has multiple words with contrasting meanings.

Can I use these antonyms in formal writing?

Most antonyms listed here are suitable for formal writing, but always check the specific context. Some antonyms carry slightly different connotations or degrees of opposition.

About antonyms for fast

Finding the right antonym for fast helps writers create contrast, clarify meaning, and add depth to their work. Defined as "Firmly or securely fixed in place", fast has 1 opposite words that can be used to express contrasting ideas.

Each antonym carries a slightly different shade of opposition. Slow is the most direct opposite in most situations.

When choosing an antonym, consider the connotation, formality level, and audience. Some alternatives work better in casual conversation while others shine in academic or professional writing. For example, using a more formal antonym in a business email can elevate your tone, while a casual antonym might feel more natural in creative writing or dialogue.

It is also worth noting that not all antonyms are perfectly interchangeable. The context of your sentence, the surrounding words, and the intended emotional impact all play a role in selecting the best opposite word. The list above provides the most common and useful antonyms for fast, but always read your sentence aloud to ensure the chosen word flows naturally.