mount
v. B2 Upper Intermediate Oxford US //ˈmaʊnt// UK //mˈaʊnt// mount
v. to increase gradually in amount or intensity; also, to fix something firmly onto a surface.
v. to increase in amount, intensity, or force over time; also, to attach or fix an object securely to a support or backing.
The pressure began to mount as the deadline approached.
Engineers had to mount the new sensors onto the engine block before the test flight could begin.
As evidence of the environmental impact continued to mount, the government was eventually forced to reconsider its stance on the proposed industrial expansion.
English surname, from the noun mount.
Usage
When meaning 'to increase', it is typically intransitive; when meaning 'to attach', it is transitive and requires a direct object.