Mount, ascend (5)

I believe the answer is:

climb

I believe this clue is a double definition.

'mount' is the first definition.
(synonyms)

'ascend' is the second definition.
(climbing is a kind of ascending)

(Other definitions for climb that I've seen before include "Go upwards" , "Go higher up" , "Rise (in value, status)" , "Rise to a higher level" , "Slope upwards" .)

I've seen this clue in The Irish Times and the Irish Times (Simplex).

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