mar ‧ gin ‧ al ‧ ly AC /ˈmɑːdʒən ə l-i, ˈmɑːdʒɪn ə l-i $ ˈmɑːr-/ BrE AmE adverb
[ Word Family: noun : ↑ margin , ↑ marginalization ; adjective : ↑ marginal , ↑ marginalized ; verb : ↑ marginalize ; adverb : ↑ marginally ]
not enough to make an important difference SYN slightly OPP significantly :
Gina’s grades have improved marginally since last term.
The new system is only marginally more efficient than the old one.