倘 (w)

(tǎng) if; supposing; in case

倘或 (w)

(tǎnghuò) if; supposing that

倘然 (w)

(tǎngrán) if; supposing that; leisurely

倘能如此 (w)

(tǎngnéngrúcǐ) if it is possible (idiom)

倘若 (w)

(tǎngruò) provided that; supposing that; if