| K | Knit | Knit | Insert needle knitwise, wrap yarn, pull through. |
| P | Purl | Knit | Insert needle purlwise, wrap yarn, pull through. |
| St(s) | Stitch(es) | Both | One or more loops on the needle/hook. |
| RS | Right Side | Both | The public-facing side of your work. |
| WS | Wrong Side | Both | The back/inside of your work. |
| CO | Cast On | Knit | Creating initial stitches on the needle. |
| BO | Bind Off | Knit | Securing stitches to prevent unraveling. Also: cast off. |
| YO | Yarn Over | Knit | Wrap yarn around needle to create a new stitch and decorative hole. |
| SL | Slip | Knit | Move a stitch from left to right needle without working it. |
| SLST | Slip Stitch | Both | Knit: slip without working. Crochet: insert hook, pull through loop on hook. |
| PM | Place Marker | Both | Put a stitch marker on the needle/in the stitch. |
| SM | Slip Marker | Both | Move the marker from left to right needle. |
| Rep | Repeat | Both | Work the instructions again as directed. |
| Rnd | Round | Both | One complete pass when working in the round. |
| BOR | Beginning of Round | Both | The starting point marker when knitting in the round. |
| WPI | Wraps Per Inch | Both | Method to determine yarn weight by wrapping around a ruler. |
| Tog | Together | Both | Work two or more stitches as one. |
| M1 | Make 1 | Knit | Lift bar between stitches and knit into it. Invisible increase. |
| M1L | Make 1 Left | Knit | Left-leaning M1. Lift bar from front, knit through back. |
| M1R | Make 1 Right | Knit | Right-leaning M1. Lift bar from back, knit through front. |
| KFB | Knit Front & Back | Knit | Knit into front then back of same stitch. Creates a small bump. |
| PFB | Purl Front & Back | Knit | Purl into front then back of same stitch. |
| Inc | Increase | Both | Add one or more stitches. Method varies by pattern. |
| K2tog | Knit 2 Together | Knit | Knit two stitches as one. Right-leaning decrease. |
| P2tog | Purl 2 Together | Knit | Purl two stitches as one. Right-leaning decrease on RS. |
| SSK | Slip Slip Knit | Knit | Slip 2 knitwise, knit together through back. Left-leaning decrease. |
| SSP | Slip Slip Purl | Knit | Slip 2 knitwise, return, purl together through back. |
| SKPO | Slip, Knit, Pass Over | Knit | Slip 1, knit 1, pass slipped stitch over. Left-leaning decrease. |
| SK2P | Slip 1, K2tog, Pass Over | Knit | Double decrease. Slip 1, K2tog, pass slipped stitch over. |
| S2KP | Slip 2, K1, Pass 2 Over | Knit | Centered double decrease. |
| Dec | Decrease | Both | Remove one or more stitches. Method varies. |
| CDD | Central Double Decrease | Knit | Slip 2 together, K1, pass slipped stitches over. |
| Tbl | Through Back Loop | Knit | Work into the back leg of the stitch instead of the front. |
| Wyif | With Yarn in Front | Knit | Bring working yarn to front of work before next action. |
| Wyib | With Yarn in Back | Knit | Keep working yarn behind work before next action. |
| CN | Cable Needle | Knit | Short needle used to hold stitches for cables. |
| C4F | Cable 4 Front | Knit | Slip 2 to CN, hold front, K2, K2 from CN. Left-leaning cable. |
| C4B | Cable 4 Back | Knit | Slip 2 to CN, hold back, K2, K2 from CN. Right-leaning cable. |
| MB | Make Bobble | Knit | Work multiple stitches into one, then decrease back. Creates a 3D bump. |
| CH | Chain | Crochet | Yarn over, pull through loop on hook. Foundation of most crochet. |
| SC | Single Crochet | Crochet | Insert hook, pull up loop, yarn over, pull through both loops. |
| HDC | Half Double Crochet | Crochet | YO, insert hook, pull up loop, YO, pull through all 3 loops. |
| DC | Double Crochet | Crochet | YO, insert hook, pull up loop, (YO, pull through 2) twice. |
| TR | Treble Crochet | Crochet | YO twice, insert hook, pull up loop, (YO, pull through 2) three times. |
| DTR | Double Treble | Crochet | YO 3 times, work off 2 loops at a time, 4 times. |
| SK | Skip | Crochet | Miss the next stitch. Also written as 'miss' in UK patterns. |
| SP | Space | Crochet | The gap/hole created by chains in the previous row. |
| FO | Fasten Off | Crochet | Cut yarn and pull through last loop to secure. |
| TC | Turning Chain | Crochet | Chain(s) at row start to reach working height. SC=1, DC=3, etc. |
| FLO | Front Loop Only | Crochet | Work into only the front loop of the stitch for a ridged effect. |
| BLO | Back Loop Only | Crochet | Work into only the back loop for ribbing effect. |
| SC2tog | SC 2 Together | Crochet | Insert hook in next st, pull up loop, repeat, YO pull through all 3. |
| DC2tog | DC 2 Together | Crochet | Work 2 incomplete DC, YO pull through all loops. |
| Inc | Increase (crochet) | Crochet | Work 2 stitches into the same stitch. |
| Dec | Decrease (crochet) | Crochet | Work 2 stitches together into one. Also: invDec (invisible decrease). |
| InvDec | Invisible Decrease | Crochet | Insert hook through front loops of next 2 sts, YO, pull through, YO, pull through 2. Neater than SC2tog. |
| FPdc | Front Post DC | Crochet | YO, insert hook around front of post, work DC. Creates raised texture. |
| BPdc | Back Post DC | Crochet | YO, insert hook around back of post, work DC. Creates recessed texture. |
| PC | Popcorn Stitch | Crochet | Work 5 DC in same st, remove hook, insert in first DC, pull last loop through. |
| CL | Cluster | Crochet | Multiple incomplete stitches joined at top. Various configurations. |
| SH | Shell | Crochet | Multiple stitches worked into the same stitch or space. |
| V-St | V-Stitch | Crochet | (DC, CH 1, DC) all in the same stitch. Creates a V shape. |
| Puff | Puff Stitch | Crochet | (YO, insert hook, pull up loop) multiple times, YO pull through all. |
| MR | Magic Ring | Crochet | Adjustable starting ring for working in the round. Also: magic circle. |
| MC | Main Color | Both | The primary/dominant color in the project. |
| CC | Contrast Color | Both | Secondary color(s). CC1, CC2, etc. for multiple contrasts. |
| CC1 | Contrast Color 1 | Both | First contrast color when using multiple colors. |
| Sew | Sew/Seam | Both | Join pieces using a yarn needle and mattress stitch or whip stitch. |
| Weave | Weave in Ends | Both | Thread tail through yarn needle and work into fabric to secure. |
| Block | Blocking | Both | Wet or steam the finished piece to set stitches and shape. |
| Gauge | Gauge/Tension | Both | Number of stitches and rows per inch/cm. UK: tension. |