According to the thesis guidelines set out by my university, the Chapter names in the table of contents must be bold. But all sections in the prefatory sections must be normal font (unbold) in the table of contents.

\documentclass{book}
\begin{document}
\frontmatter
\chapter{Abstract}
The Abstract'' entry (and entries for other frontmatter chapters) in the table of contents should be unbolded.
\tableofcontents
\mainmatter
\chapter{Chapter name}
But the mainmatter chapters should still be bold in TOC.
\end{document}


marked as duplicate by Mike Renfro, Werner, Arun Debray, Jesse, Svend TveskægFeb 1 '16 at 6:37

I'm not sure this is wise....

Caveat emptor....

\documentclass{book}
\begin{document}
\frontmatter
\let\bforigdefault\bfdefault
The Abstract'' entry (and entries for other frontmatter chapters) in the table of contents should be unbolded.