Full Idea
According to Frege, a statement's analyticity (in my epistemological sense) is to be explained by the fact that it is transformable into a logical truth by the substitution of synonyms for synonyms.
Clarification
For his 'epistemological sense' see Idea 9368
Gist of Idea
A statement is analytic if substitution of synonyms can make it a logical truth
Source
report of Gottlob Frege (Grundlagen der Arithmetik (Foundations) [1884], §03) by Paul Boghossian - Analyticity Reconsidered §I
Book Reference
-: 'Nous' [-], p.5
A Reaction
[He says this interpretation of Frege's semantical notion of analyticity may be controversial] Presumably we see that 'bachelors are unmarried men' is analytic when we start substituting for 'bachelor'. Sounds reasonable.
Related Idea
Idea 2515 Frege fails to give a concept of analyticity, so he fails to explain synthetic a priori truth that way [Katz on Frege]