German lover forced to creep (6)
I believe the answer is:
grovel
'to creep' is the definition.
('grovel' can be a synonym of 'creep')
'german lover forced' is the wordplay.
'german' becomes 'g' (abbreviation).
'forced' indicates an anagram.
'lover' anagrammed gives 'rovel'.
'g'+'rovel'='GROVEL'
(Other definitions for grovel that I've seen before include "Behave obsequiously, humble oneself" , "Humble oneself in supplication" , "Behave obsequiously in fear or servitude" , "Display abject humility" , "Show extreme humility" .)