speedvsspentWhat's the difference?

Quick tell: speed is a noun, spent is an adjective, so they fill different roles in a sentence.

Which to use

“speed” is a noun and “spent” is an adjective - they look or sound alike but fill different roles in a sentence.

#1,099
“speed” frequency rank
#1,029
“spent” frequency rank
2128
confusion score

Side-by-Side Comparison

Feature speed spent
Definition The state of moving quickly or the capacity for rapid motion. Consumed, used up, exhausted, depleted.

Where the eye mixes speed and spent

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
speed
5 ch
spent

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: speed is /spiːd/ while spent is /spɛnt/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 2128, derived from the frequency rank of both members and their visual similarity.

speed is recorded at frequency rank #1,099, classified as anoun, pronounced /spiːd/. spent is at rank #1,029, tagged as anadj, pronounced /spɛnt/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 2128, this pair ranks #525,793 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of speed vs spent

Shared letters: eps. Private to "speed": d. Private to "spent": nt.

"speed" · 5 letters · shape CCVVC  ·  "spent" · 5 letters · shape CCVCC

Known mistypes of this pair

  • speedpseed · seped · spede · speedd · sppeed · sspeed
  • spentpsent · sepnt · spennt · spentt · spetn · spnet · sppent · sspent

Frequently Asked Questions

Can "speed" and "spent" be used interchangeably?
No - they are not even the same part of speech. "speed" is a noun and "spent" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "speed" or "spent"?
"spent" is the more common of the two: it sits at frequency rank #1,029 in our English list, against #1,099 for "speed". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list