The right to dower could be barred by the wife before marriage accepting a jointure (a life estate in specified lands) in lieu of dower, or by the complicated uses to bar dower invented in the 18th century.
Masking (personality) Masking (Personality Theory) - Masking is a process in which an individual changes or masks his or her natural personality to conform to social pressures, abuse, and or harassment.
Simultaneous masking occurs when a sound is made inaudible by a noise or unwanted sound of the same duration as the original sound. For example, a powerful spike at 1 kHz will tend to mask out a lower-level tone at 1.1 kHz. Also, two sine tones at 440 and 450 Hz can be perceived clearly when separated.