alter vs althea, What's the Difference?

Which to use

“alter” is a verb and “althea” is a noun - they look or sound alike but fill different roles in a sentence.

#6,540
“alter” frequency rank: #49,181
“althea” frequency rank: 55721
confusion score

Side-by-Side Comparison

Feature	alter	althea
Definition	To change the form or structure of.	Any of several plants of the genus Althaea; the hollyhocks and mallows, native to Eurasia.

Letter map: alter vs althea

Shared letters muted; letters that set alter and althea apart highlighted. Shared run: 4.

5 ch

alter

6 ch

althea

Role in the sentence - alter and althea

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: alter is averb and altheaanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 55721, derived from the frequency rank of both members and their visual similarity.

alter is recorded at frequency rank #6,540, classified as averb, pronounced /ˈɒl.tə/. althea is at rank #49,181, tagged as anoun.

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 55721, this pair ranks #131,513 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of alter vs althea

Shared letters: aelt. Private to "alter": r. Private to "althea": h.

"alter" · 5 letters · shape VCCVC · "althea" · 6 letters · shape VCCCVV

Known mistypes of this pair

alter ← allter · alterr · altre · atler
althea ← alhtea · allthea · alteha · althae · althhea · altthea · atlhea · lathea

Frequently Asked Questions

Is swapping "alter" for "althea" ever safe?

No - they are not even the same part of speech. "alter" is a verb and "althea" a noun, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "alter" or "althea" show up more?

"alter" is the more common of the two: it sits at frequency rank #6,540 in our English list, against #49,181 for "althea". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "alter" and "althea". Here's where to go from here.

Full dictionary entry for "alter" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "althea" - compare definitions side by side with the headword page. Word entry
This pair ranks #131,513 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"alter" and "althea" also get mixed up with nearby pairs, the highest-scored neighbour is "althea vs altho". Nearby pair
Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #131,513 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.