There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.

Qenya 

sí

adverb. now, here

Qenya [Ety/SI; LR/047; LR/056; LR/072; PE22/105; PE22/120; PE22/124; PE22/125; PE22/126; PE23/092; PE23/099; PE23/109; PE23/110; SD/247; SD/310] Group: Eldamo. Published by

a lámie b ye b túlie ye a ethequente: sí makiletya keróvie, tuvo te ye b ethetúvie

A called to B {and} B/he came and A said to him: here is {your} the sword that you {had} lost[,] take it, and B took it

andalúme eldar oianer valinoresse, masse oiar sí

for a long while the Elves lived in Valinor, where are they/do they live now?

ilya sí maller raikar

now all roads (are) bent

Qenya [LR/047; LR/056; SD/310] Group: Eldamo. Published by

i·nér né raiqa ar sí aphastat

the man was angry but now is in good humor (lit. it pleases him)

masse lante veleriande, masse láta sí?

where did Beleriand lie, where lies it now?

níla tyaze matite sí

I don’t like eating (to eat) it now

númen endorello isse sí vaia síra

westward of Middle-earth where now Ocean flows

sí tina·mbar (i l’eqétie)

now this house (of yours) that you have mentioned

ten sí ye tyelma, yéva tyel ar i narqelion

for here is ending, and there will be an end and the Fading

ási, sí

come now, now


Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.