Difficult (6 letters)

"Thanks ___!" (4 letters)

C (7 letters)

Author Struther (3 letters)

Mangy mutt (3 letters)

Like some opportunities (6 letters)

Tip off (4 letters)

"Mm-hmm" (4 letters)

Curl the lip (5 letters)

Nondrinkers: Abbr. (3 letters)

Choice words? (6 letters)

Ymir, for one (4 letters)

Golf score (3 letters)

Unfortunate (4 letters)

Arithmetic stat. (3 letters)