tad /tæd/ BrE AmE noun spoken
[ Date: 1900-2000 ; Origin: tad 'small boy' (19-20 centuries) , perhaps from English dialect tad 'toad' ]
a tad
a) a small amount:
‘Would you like some milk?’ ‘Just a tad.’
b) slightly:
It’s a tad expensive.
tad /tæd/ BrE AmE noun spoken
[ Date: 1900-2000 ; Origin: tad 'small boy' (19-20 centuries) , perhaps from English dialect tad 'toad' ]
a tad
a) a small amount:
‘Would you like some milk?’ ‘Just a tad.’
b) slightly:
It’s a tad expensive.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012