How to spell OPTISIM correctly?

The correct spelling for "optisim" is optimism. Possible suggestions for correcting this misspelling are using autocorrect or spell check on computers and phones, consulting a dictionary or asking someone for help who knows how to spell the word correctly.

• optimism Despite the challenges ahead, the team approached their work with a sense of optimism and determination.
• optimum I adjust my settings to achieve optimum performance.

Intertubing

• antedating
• entertain
• entertainer
• entertaining
• inditing
• inner-tubing
• intertwine
• interurban
• intuiting
• undertaking