It depends on what you were planning to use the essential oil for. I will list some of its therapeutic properties with other essential oil replacements below:
Diuretic:Chamomile, Cedarwood, & Juniper
Menstrual Regulation: Juniper, Clary Sage, & Rosemary
Digestive Aid: Chamomile, Bergamot, Peppermint
There are two types of fennel one is sweet and the other is bitter the essential oil is collected from the roots seeds and leaves by steam distillation Florence fennel is popular and has a slightly aniseed flavour it is used in the making of gripe water and is very good for dispersing wind and when used with a carrier oil its good for massaging into the skin to prevent nausea especially when travelling
Not to be used by pregnant women as medicinal remedies. Essential oil of fennel is toxic in doses as small as 5 ml, the volatile oil should not be ingested.
fennel oil
Other oils such as vegetable oil, canola oil, or coconut oil can be substituted for olive oil in cooking.
Applesauce
yes it can be substituted, you might want to use a little LESS of the olive oil, as it is heavier and has a stronger taste.
Fennel seed, or star anise, but you need to grind the star anise. You want something that tastes like licorice. The Star Anise is kind of expensive, it comes like 12 in a bottle, for six dollars; they look like stars. There are also liqueurs that taste like licorice, such as Pernod.
butter
It is olive oil and it is called sweet oil because of it's sweet taste.
No. Isopropyl alcohol can not be substituted for mineral spirits. It will not blend well with oil based paint and will not remove oil based paints.
No, you would have to substitute either another oil or applesauce.
olive oil is one.