Illness, sickness : 1. Feeling uneasy and uncomfortable.

Incest : Related to the denied aspects of self. Possibly denotes a desire or in the  process of integrating that denied aspect.

Insanity : 1. Possible indicative of feeling not being able to cope with something.
2. Trying to avoid some responsibility.

Insecticide : 1.Possible associated with wanton destruction and lack of regard for others.
2. May indicate a wish to resolve or overcome some irritating or frustating matters.

Insects : Insects are dream symbols associated with small minor things in life. Often associated with minor frustrations or annoyance that are bugging oneself.

Invisible Presence : Possibly indicative of an aspect of self that is still not fully  known to the conscious personality of the dreamer.

Island : 1. A possible symbol of loneliness.

2. A possible desire to isolate oneself from others. This could be due to facing too much problems.
3. Feeling stuck and clueless.

Ice berg could signify that something or some issue that is more complex than what it seems to be.

Ignition : 1. Associated with passion and enthusiam. 2. Symbolic of a new significant phase in life.

More dream symbol will be added as time goes by.