Add/Drop - Process of dropping a player from your roster and adding a free agent to replace him.
Auction Draft - An alternative to the popular "serpentine" drafting method, auction drafting allows fantasy football owners to build their roster by bidding dollar amounts on each player. Each team begins the auction with a set salary cap - the total amount of money they may spend. Each player is brought up for auction, with the player being assigned to the team that bids the most. Teams must build their team by winning players while not exceeding their overall salary cap.
Bonus Scoring - Extra points awarded within a fantasy league when a player goes over a set threshold. For example, some leagues award a bonus of 2 points for touchdown runs over 50 yards.
Bust - A highly sought-after player in the pre-season who fails to live up to his expectations.
Cheat Sheets - Lists prepared by fantasy experts to aid owners in their draft. Players are ranked by position and desirability based on their expected performance.
Commissioner - The person who runs the league and is ultimately responsible for all league rules and decisions.
Depth Chart - A list of pro players, ordered by team and position, listing where they rank on the team. For example, a team's starting running back will be ranked first, followed by the second string and then third string running back. Depth charts are useful in determining who the next option would be should a team's starter be injured.
Draft - The process, held before the season starts, of taking turns selecting players until every teams' roster is full.
• Automated draft - a draft option that makes it possible to draft teams without having to physically attend a draft. Each team in the league pre-ranks players who are then assigned to teams using an automated draft process.
• Online draft - The process of holding a league's draft live online, usually using a custom "draft room"
• Offline draft - Gathering together all team owners in a single location to draft.
Free Agents - Players who are available. Any player who is not currently on any teams' roster or on waivers is considered a free agent.
IDP - Short for Individual Defensive Players. An alternate to the team defense (see definition) concept, fantasy teams draft and earn points for individual defensive players.
Injured Reserve - A roster spot that is used to keep an injured player "reserved" from the rest of the league. Typically, a player on injured reserve is on a team's roster but not allowed to be placed in the active lineup.
Injury Report - During the season, NFL teams provide injury reports on a daily basis. These reports list player injuries and status for the upcoming game. Injury reports are useful to fantasy team owners when determining who to start and who to reserve.
Keeper League - A type of Fantasy Football league that allows each team to "keep" a set number of players on their roster from year to year.
League - The group of owners whose teams compete against each other.
Mock Draft - Sample drafts, usually from fantasy football experts, that fantasy team owners refer to. Mock drafts give team owners a good idea of where individual players are typically being drafted.
Owner - Refers to the person in charge of each individual fantasy team. A group of owners make up the league.
Player Ranking List - Fantasy Football term that describes an owner's draft preparation list of players, ranked in order of preference.
Projections - Expected statistical performances by players for the season. For example, to help owners with the draft preparations, expects "project" the statistics pro players are expected to accumulate over the course of the season.
Reserves - Players who are on an owner's roster but are not in the starting lineup. Reserves do not earn points.
Roster Limit - Teams are limited to a set number of "spots" on their roster.
Scoring System - The "system" your Fantasy Football league uses to determine how players earn points.
Serpentine Draft - The most commonly used draft order where teams that pick early in the odd rounds pick late in the even rounds. For example, in a ten team league, the team that has the first pick in the first round would pick tenth in the second round and first in the third round.
Sleeper - A player who can be selected late in the draft or picked up as a free agent who has the potential to have a "break out" season.
Starters - The lineup of players that an owner fields for the week's game. These are the "active" players that will earn points.
Team Defense - Scoring concept used by most fantasy leagues whereby entire teams' defenses are drafted and earn points.
Team QB - A concept used by some fantasy leagues whereby owners draft and earn points via a team's QB position instead of individual quarterbacks. When a starting QB is replaced by a backup, the fantasy team owner automatically receives credit for both player's statistics.
Trade - In Fantasy Football terms, considered the act of exchanging players and/or draft picks between teams.
Trade Deadline - A point towards the end of the season when trades are no longer allowed to be made.
Undroppable Players - A method of maintaining fairness and integrity in a Fantasy Football league. Some leagues maintain a set of "undroppable players" - a list consisting of the best players in the league that teams cannot drop from their roster for any reason. This is done to prevent teams out of contention from dropping stars from their roster and giving other teams an unfair advantage.
Waivers - Process used in some Fantasy Football leagues to make all free agents equally available to every team. Waivers generally work like this: when a player is dropped from one team, he does not immediately become available. Instead, the player is placed on waivers for a set amount of days. The team with the highest waiver order who puts in a claim for that player will have the chance to add him to their roster.
Waiver Order - The ranking of teams with priority on waiver claims. Typically, from week to week, waiver order is reset to reflect team records. The team with the worst record gets the highest prior and the team with the best record gets the lowest priority.
Please feel free to add to list