'tis
pron. C2 Proficiency US //ˈtɪz// tis
pron. a very old-fashioned way to say 'it is'. You mostly see this in old poems or songs.
pron. a contraction of 'it is', primarily found in archaic, poetic, or literary contexts.
'Tis a beautiful morning.
Every December, children sing "'Tis the season to be jolly" as part of the old carol.
While modern prose avoids such contractions, the poet used ''tis' to maintain the strict iambic meter of the sonnet's opening line.
Usage
A contraction of 'it' and 'is'; the apostrophe replaces the letter 'i' in 'it'.
Pitfall
tis'tisThe word is a contraction and requires a leading apostrophe to represent the missing letter 'i'.