Synonyms of the word

simply

• adv. (manner) In a simple way or state; considered in or by itself; without addition; alone.
• adv. (manner) Plainly; without art or subtlety; clearly; obviously; unquestionably.
• adv. (manner) Weakly; foolishly; stupidly.
• adv. (focus) Merely; solely.
• adv. (degree) absolutely, positively.
• adv. (speech act) Frankly.

but

• prep. (obsolete outside Scotland) Outside of.
• prep. Without, apart from, except.
• adv. Merely, only.
• adv. (Australia, conjunctive) Though, however.
• conj. Except (for), excluding. Often preceded by a negation.
• conj. On the contrary, but rather (introducing a word or clause that contrasts with or contradicts the preceding…
• conj. However, although, nevertheless (implies that the following clause is contrary to prior belief or contrasts…
• conj. Except that (introducing a subordinate clause which qualifies a negative statement); also, with omission…
• conj. (archaic) Without its also being the case that; unless that (introducing a necessary concomitant).
• conj. (obsolete) Except with; unless with; without.
• conj. (obsolete) Only; solely; merely.
• n. An instance or example of using the word "but".
• n. (Scotland) The outer room of a small two-room cottage.
• n. A limit; a boundary.
• n. The end; especially the larger or thicker end, or the blunt, in distinction from the sharp, end; the butt.
• v. (archaic) Use the word "but".

just

• adj. Factually right, correct; factual.
• adj. Rationally right, correct.
• adj. Morally right; upright, righteous, equitable; fair.
• adj. Proper, adequate.
• adv. Only, simply, merely.
• adv. (sentence adverb) Used to reduce the force of an imperative; simply.
• adv. (speech act) Used to convey a less serious or formal tone.
• adv. (speech act) Used to show humility.
• adv. (degree) absolutely, positively.
• adv. Moments ago, recently.
• adv. By a narrow margin; closely; nearly.
• adv. Exactly, precisely, perfectly.
• n. A joust, tournament.
• v. To joust, fight a tournament.

merely

• adv. (obsolete) Wholly, entirely.
• adv. (focus) Without any other reason etc.; only, just, and nothing more.

only

• adj. Alone in a category.
• adj. Singularly superior; the best.
• adj. Without sibling; without a sibling of the same gender.
• adj. (obsolete) Mere.
• adv. Without others or anything further; exclusively.
• adv. No more than; just.
• adv. As recently as.
• adv. (obsolete) Above all others; particularly.
• conj. Under the condition that; but.
• conj. But; except.
• n. An only child.

plainly

• adv. In a plain manner; simply; basically.
• adv. Obviously; clearly.