1. Na-adjective (keiyodoshi), Adverb (fukushi), Noun

   mostly; ordinarily; usually; generally

   Usually written using kana alone

   Ｘ記号は数学ではたいてい未知数を表す。

2. probably

3. Noun which may take the genitive case particle 'no', Noun

   most; almost all

4. ordinary

   before a neg. form

5. Na-adjective (keiyodoshi)

   proper; appropriate; moderate

   usu. as 〜にする

Also written 大てい【たいてい】taitei