I came across a sentence on grammarist.com:
Blest is an archaic form that shows up mainly in references to old, mostly poetical texts and as a poetic affectation.
I find the alternation between the two words poetic and poetical interesting. Between the pair, poetic is of course much more common. According to ODO, poetical is defined as
Relating to poetry.
Written in verse rather than prose.
Having an imaginative or sensitively emotional style of expression.
And the definitions of poetic are, well, quite similar if not the same:
relating to or used in poetry.
written in verse rather than prose.
having an imaginative or sensitively emotional style of expression.
I found a discussion on Word Reference Forum which doesn't have much information but rather makes the topic more confusing.
How do they differ in usage? What is the rationale behind the alternation of words in some texts, e.g. the Grammarist post.