Starts to venture overseas in spare time: travel well (3,6)
I believe the answer is:
bon voyage
'travel well' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
I also know that 'travel' relates to this answer.
'starts to venture overseas in spare time' is the wordplay.
'starts to' says to take the initial letters.
'in' means one lot of letters goes inside another.
'spare' becomes 'bony' (both can mean very thin).
'time' becomes 'age' (an age is a period of time).
The initial letters of 'venture overseas' is 'vo'.
'vo' going inside 'bony' is 'bonvoy'.
'bonvoy'+'age'='BON VOYAGE'
Can you help me to learn more?
(Other definitions for bon voyage that I've seen before include "Have a nice cruise, monsieur" , "travel well!" , "Have a good journey - at sea" , "Have a good trip - on the briny" .)