The most common way to say "my darling" in Gaelic would be to say "mo ghraidh".
maol
càirdean
seanair
ogha
Muir (sea)
Camshron
tapadh leat
glasraichean
buadhaich air
Taigh gràis ?
Taigh creideimh ?
Answer: wee. Note: this is the translation in Scots, which should not be confused with Scottish Gaelic.