firmlyvsfirstlyWhat's the difference?

Which to use

“firmly” and “firstly” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#7,134
“firmly” frequency rank
#10,694
“firstly” frequency rank
17828
confusion score

Side-by-Side Comparison

Feature firmly firstly
Definition In a firm or definite or strong manner. In the first place; before anything else; first.

Where the spellings diverge

Shared letters are muted; the letters that actually set firmly and firstly apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

6 ch
firmly
7 ch
firstly

Spelling & Dictionary Insight

A purely visual mix-up. firmly (/ˈfɝmli/) and firstly (/ˈfɜɹstli/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 17828, derived from the frequency rank of both members and their visual similarity.

firmly is recorded at frequency rank #7,134, classified as anadv, pronounced /ˈfɝmli/. firstly is at rank #10,694, tagged as anadv, pronounced /ˈfɜɹstli/.

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 17828, this pair ranks #448,868 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of firmly vs firstly

Shared letters: filry. Private to "firmly": m. Private to "firstly": st.

"firmly" · 6 letters · shape CVCCCV  ·  "firstly" · 7 letters · shape CVCCCCV

Known mistypes of this pair

  • firmlyffirmly · fimrly · firlmy · firmlly · firmlyy · firmmly · firmyl · firrmly
  • firstlyffirstly · firrstly · firslty · firsstly · firstlly · firstlyy · firsttly · firstyl

Frequency comparison

firmly#7,134
firstly#10,694

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "firmly" and "firstly" be used interchangeably?
No. They are said differently (/ˈfɝmli/ versus /ˈfɜɹstli/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "firmly" or "firstly"?
"firmly" is the more common of the two: it sits at frequency rank #7,134 in our English list, against #10,694 for "firstly". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering firmly vs firstly

The fastest way to pick the right one every time.

  • Read both glosses above and match the meaning you intend, only context separates this pair.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “firmly” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list