Synonym of ペーパーバック (pēpābakku, “paperback”); a softcover

Clipping of ソフトウェア (sofutowea, “software”). / Clipping of ソフトボール (sofutobōru, “softball”).

soft (giving way under pressure) / soft (gentle)

(music) to cover / to cover for; to make up for (a deficiency)

material to cover with (such as a cosy) / (music) cover song

a book / a script; a scenario / source; origin; root

just

version

printing blocks / edition, version / revision

a dust jacket, bookjacket