Cleaner alternative for "sucks". [duplicate]

Solution 1:

While sucks is a verb form, most of the terms that convey similar meaing are adjectives. The primary connotation of sucks is that the referent, whether a person, object, action or state of being, is very bad or awful (as in That sucks).

There are numerous synomyms for awful, such as

abominable

atrocious

dreadful

terrible

unspeakable

painful

nasty

unpleasant

and

lousy

pathetic

poor

wretched

abysmal

dismal

ghastly

mean

miserable

worthless

While each of these might not be an ideal choice in all the contexts as the OP requests, many of them might suit in the particular context he or she is actually using.

Solution 2:

There is stinks:

v. (intransitive, informal) To be greatly inferior; to perform badly.

This is comparable to the definition of sucks:

v. (intransitive, slang) To be inferior or objectionable: a general term of disparagement, sometimes used with at to indicate a particular area of deficiency.

Also, blows:

v. (intransitive, slang) To be very undesirable (see also suck).

Instead of saying "this sucks", one could say "shucks!" or "nuts!" This would depend on how much something "sucks", of course.

shucks: Interjection
(colloquial) Exclamatory response to a minor disappointment.

nuts: Interjection
Indicates annoyance, anger, or disappointment.

To describe the sex act, you could say fellatio.

Finally, you can opt for sarcasm: "that's interesting" instead of "that sucks". This relies on delivery and how well your audience knows you, otherwise your words may be taken at face value.