English definition of “too”
too small/heavy/much, etc › used before adjectives and adverbs to mean 'more than is allowed, necessary, possible, etc': The film is also far too long. There are too many cars on the roads these days. [+ to do sth] I decided it was too early to get up and went back to sleep.
› also: Do you know Jason too? I'll probably go there next year too.
not too › used before adjectives and adverbs to mean 'not very': "How was your exam?" "Not too bad, I suppose." I didn't play too well today.