Ironical

[Luis Fok]

Pertaining to irony; containing, expressing, or
characterized by, irony; as, an ironical remark.

[Monty]

Comically [antiquated] variation on ironic presently used most often to emphasise the unseriousness of a point. Ironical, like many nouns accepting the -ical adjectival suffix (e.g., [poetical], hermetical, etc.) fell into disuse in favour of the shorter -ic form (e.g., poetic, hermetic, etc.) in Early Modern English. The [anachronistic] ironical is therefore most commonly used in current speech to suggest the absurdity of an expression.