thankfulvsthankfullyWhat's the difference?

Quick tell: thankful is a adjective, thankfully is an adverb, so they fill different roles in a sentence.

Which to use

“thankful” is an adjective and “thankfully” is an adverb - they look or sound alike but fill different roles in a sentence.

#7,990
“thankful” frequency rank
#9,676
“thankfully” frequency rank
17666
confusion score

Side-by-Side Comparison

Feature thankful thankfully
Definition Showing appreciation or gratitude. In a thankful manner; giving thanks.

Where the spellings diverge

Shared letters are muted; the letters that actually set thankful and thankfully apart are highlighted. They share 8 letters in sequence, which is exactly why the eye skips the difference.

8 ch
thankful
10 ch
thankfully

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: thankful is anadjective and thankfullyanadverb. On the page they differ by 2 extra letter(s) - “thankful” sits inside “thankfully”. Our composite confusion score for this pair is 17666, derived from the frequency rank of both members and their visual similarity.

thankful is recorded at frequency rank #7,990, classified as anadj, pronounced /ˈθæŋkfl̩/. thankfully is at rank #9,676, tagged as anadv.

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 17666, this pair ranks #449,938 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of thankful vs thankfully

Shared letters: afhklntu. Private to "thankful": -. Private to "thankfully": y.

"thankful" · 8 letters · shape CCVCCCVC  ·  "thankfully" · 10 letters · shape CCVCCCVCCV

Known mistypes of this pair

  • thankfulhtankful · tahnkful · thaknful · thanfkul · thankfful · thankflu · thankfull · thankkful
  • thankfullyhtankfully · tahnkfully · thaknfully · thanfkully · thankffully · thankfluly · thankfullyy · thankfuly

Frequency comparison

thankful#7,990
thankfully#9,676

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "thankful" and "thankfully" be used interchangeably?
No - they are not even the same part of speech. "thankful" is an adjective and "thankfully" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "thankful" or "thankfully"?
"thankful" is the more common of the two: it sits at frequency rank #7,990 in our English list, against #9,676 for "thankfully". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering thankful vs thankfully

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “thankful”; for an adverb, it's “thankfully”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “thankful” 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