Extended iambic hexameter refers to a metrical line consisting of six iambic feet (unstressed-stressed: da-DUM) per line, adapted from classical dactylic hexameter but rendered in English stress-based prosody; though rare due to its length and potential monotony, poets like Robert Bridges or Longfellow have employed it to achieve a stately, rolling cadence suitable for narrative or meditative verse, often using enjambment and varied caesurae to maintain rhythmic vitality across the extended line.

Iambic hexameter lines extended beyond the standard six feet; can alter pacing and grandeur. Also called Alexandrine in French tradition. Use for elevated or epic tone. Study Dryden or Pope. Requires careful caesura placement. Adds weight and solemnity. Effective for concluding lines or major statements.