1
generally;mainly;usually;normally;mostly;for the most part
彼は夜にはたいがい家にいる。
He is generally at home in the evening.
2
nearly all;almost all;most
ディナーはたいがいコーヒーで終わる。
Coffee finishes most dinners.
3
gist;summary;outline;main idea
4
staying within bounds;not overdoing (something);not getting carried away;not going too far;being moderate
See also:
大概にする (たいがいにする)
5
probably;perhaps;in all likelihood
6
considerably;greatly;really