Dictionary
but•toned-up
Pronunciation: (but'nd up'), [key]—
adj.
1. carefully planned, operated, supervised, etc.:
one of the most buttoned-up companies in the business.
2. conservative, as in professional style or manner:
Employers are looking for buttoned-up types. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.