This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Set off within or as if within parentheses; qualifying or explanatory: a parenthetical remark.

adj. Using or containing parentheses.

n. A parenthetical word, phrase, or remark.

adj. using, containing, or within parentheses (like this)

adj. that explains or qualifies something

adj. that is incidental

n. a word or phrase within parentheses

Pertaining to or of the nature of a parenthesis; expressed as or in a parenthesis: as, a parenthetical clause.

Using or containing parentheses: as, a parenthetical style.

Occurring like a parenthesis or episode; incidental.

Curved; bowed; resembling in shape the marks called parentheses.

adj. qualifying or explaining; placed or as if placed in parentheses

n. an expression in parentheses

"A correspondent from Armenia writes to ask about the origins of you know as a parenthetical conversational 'filler'."

incidental    incident   

adjunct   

inserted   

alphabetical    antithetical    heretical    hypothetical    theoretical   

post-structuralist    half-uttered    title    religion    before-but    medical    prefatory    offhanded    digressive    misspelt