Eighteen dream meaning is explained below using 5 different sources. Each interpretation is shown with its source.

Interpretation 1 — Nancy Wagaman

A certain time frame or phase in your life.

Revisiting the past or looking forward to the future.

Dreaming that you’re 18 when you’re not can represent newness or beginning a phase, responsibility, freedom, self-sufficiency, or validation, learning through experience or “the hard way.” See also: Number, Age, Time Frame

Source: The Curious Dreamer’s Dream Dictionary Author: Nancy Wagaman

Interpretation 2 — DreamForth

To dream of the number eighteen signifies materialistic desires as well as issues of corporeal affects. It can be a warning of deceit or others taking advantage of you.
Source: Dream Symbols and Analysis Author: DreamForth

Interpretation 3 — Dream Explanations - Anonymous

Dreams of the number eighteen represents the turning point from childhood to adulthood. You are stepping into responsibility.
Source: Strangest Dream Explanations Author: Dream Explanations - Anonymous

Interpretation 4 — myjellybean

The number eighteen symbolizes the conflict between materialism and spirituality. It also warns of deception and selfishness.
Source: My Dream Interpretation Author: myjellybean

Interpretation 5 — Stearn Robinson - Tom Corbett

See Numbers.
Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett