most importantly
4 synonyms for most importantly, grouped by meaning and by how common each one is.
Adverb — Used to introduce the point the speaker considers the single most significant, usually at the end of a list.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
How to use most importantly
The word patterns that sound natural to a native speaker.
Acceptable in all registers. A minority of style guides prefer 'most important' as the sentence adverbial, but 'most importantly' is now standard.