Think a lot of diamonds get hidden in a bog (6)
I believe the answer is:
admire
'think a lot of' is the definition.
(I've seen this in another clue)
'diamonds get hidden in a bog' is the wordplay.
'diamonds' becomes 'd' (abbreviation in bridge say).
'get hidden in' indicates putting letters inside.
'bog' becomes 'mire' (mire is a kind of bog).
'a'+'mire'='amire'
'd' inserted inside 'amire' is 'ADMIRE'.
(Other definitions for admire that I've seen before include "Have high regard for, think well of" , "Respect greatly" , "Respect and approve of" , "Respect (someone)" , "Revere" .)