### Clue: Spread of Dutch language hindered by island people at first (8)
### Answer: DISPERSE 
 ### Explanation: Definition: Spread
 D(abbrev. for "Dutch") + { ERSE(the Scottish or Irish Gaelic language) **placed below**(hindered by, in a down clue) [IS(abbrev. for "island") + **the 1st letter of**(… at first) "people" ] }.